1. Math

    Which of the following is a prime #? a.2 b.19 c.37 d.51 e.67 I choose 2. But the book answer is 51. The book says:( 2,19,37, and 67 are prime #'s) 3x17=51, so it is not prime. I forgot what prime #'s mean that's why I choose anything like 2. help me. A
  2. PROBLEM SOLVING IN MATHEMATICS

    there are two prime numbers between 100 and 199 such that the ten digits is a prime number, the ones digit is a prime number and the tens and ones digits taken together are a 2 digit prime number. find the sum of these 2 prime number.
  3. Math

    ) Form a conjunction from the following two statements and determine if the conjunction is true or false. Explain. Two is an even number. Two is a prime number. A) Two is an even number or two is a prime number.; False B) Two is an even number and two is a
  4. Math

    A positive integer n is defined as a "prime interlude" if n-1 and n+1 are both prime numbers. Which of the following is not a "prime interlude?" a.4 b.18 c.30 d.72 e.90 ( First of all; What is a "prime interlude??") I don't understand the question and
  5. Data Structure and Algorithms in Java

    A prime number is a natural number greater than 1 that has no positive divisors other than 1 and itself. On the other hand, a composite number is a natural number greater than 1 that is not a prime number. For example, 5 is prime, as only 1 and 5 divide
  6. Math

    The number p is the product of three different positive prime numbers greater than 2.If the sum of these three prime number is also prime, what is the smallest possible value for p? Won't the 3 number be 3-5-11? Thanks
  7. math

    The Florida Lottery is made up of the numbers 1-49. My mother has observed that the winning numbers many times are prime numbers. 1.List the prime numbers from 1-49: 2.What is the probability of a prime number being picked randomly from the numbers 1-49?
  8. math

    The Florida Lottery is made up of the numbers 1-49. My mother has observed that the winning numbers many times are prime numbers. 1.List the prime numbers from 1-49: 2.What is the probability of a prime number being picked randomly from the numbers 1-49?
  9. Math

    Plz help don't know how to do this question. Write number 68 as a product of prime factors. Try to do prime factorazation. start dividing by 2 68 34 2 17 2*2 Can you go any further? Are all these prime? prime factorization of 34 98
  10. math

    the florida lottery is made up of the number 1-49. my mother observed that the winning numbers many times are prim numbers. a. list the prime numbers from 1-49 b. what is the probability of a prime number being picked randomly from the numbers 1-49? c. is
  11. MATH!

    The sum of two prime numbers is the prime number 89,563. Find the smaller of the two addends. I attempted the problem but I'm not sure if it is right. 89,561 is a prime number and so is 2. So is the answer 2?
  12. Math Prime Numbers

    Grade 7 question: I am a two-digit prime number I am one less than a multiple of 10 If you add 30 to me you get another prime number Who am I _________?
  13. Math

    What prime number am I? • I have three prime factors • each prime factor is a different number • I am a multiple of 10 • I am less than 50 Please help answer this question??
  14. math

    Can someone help me with prime and composite numbers? Prime numbers are counting numbers that can be divided evenly bt only two numbers:1 and themselves. A prime number can also be described as a counting number with exactly two factors, 1 and itself. So,
  15. Math

    All numbers in our real number system are the product of prime numbers. Complete the following steps for this discussion: 1. List the ages of two people in your life, one older than you and one younger than you. It would be best if the younger person was
  16. Math

    1.) Is it possible for a composite number to have more than one prime factorization? Is it possible for a number to have no prime factors? Why? 2.) Give an example of how prime factorization could be used in the real world. Thank you to anyone that takes
  17. Math

    What is my number? 1.My number is a perfect square 2.The only prime number in it's prime factorization is 2 3.My number is a factor of 32 4. The sum of it's digits is odd.
  18. Math

    What prime number am I? I have 3 prime factors Each prime factor is a different number I am a multiple of 10 I am less than 50
  19. Math

    1. Is it possible for a composite number to have more than one prime factorization? 2. Is it possible for a number to have no prime factors? Why? 3. Give an example of how prime factorization could be used in the real world
  20. Math

    Is it possible for a composite number to have more than one prime factorization? Is it possible for a number to have no prime factors? Why? Give an example of how prime factorization could be used in the real world.
  21. math

    number is greater than 50 and less than 100. you can make exactly 5 different rectangles with a mystery numbers of tiles. its prime factorization consists of only one prime number. whats my number
  22. IB HL Math

    I need to that if there is better way to prove the following: I am trying to prove that x r = k and k is a multiple of x only when x is prime. I said that if x is non-prime, then: Let a = 6 Let r = 4 6! (6 – 4)! 4! = 3(2) x 5 x 4! (2!) 4! = 15 It is not
  23. Math

    If a composite number has the first five prime numbers as factors, what is the smallest number it could be? Write that number's prime factorization.
  24. math

    the sum of the digits of a two digit prime number is substracted from the number. prove that the difference cannot be a prime number.
  25. Math

    Let n = c x p, where p is a prime number, and c is a composite number less than p. The number c has three unique prime factors. How many unique prime factor does n^2 have?
  26. math

    a mystery number is bigger than 50 and larger than 100. you can make exactly five different rectangles with the mystery number of tiles. its prime factorization consists of only one prime number. what is the number
  27. Math

    There are 13 flavbors at a local ice cream parlor. Is the number 13 a prime number or a composite number? If it is composite, write the number as the product of prime numbers
  28. math

    a mystery number is bigger than 50 and larger than 100. you can make exactly five different rectangles with the mystery number of tiles. its prime factorization consists of only one prime number. what is the number
  29. math

    You can use the prime factorization of a number, written as the product of powers of prime numbers, to find the number of factors the number has. First, express the number as a product of powers of prime numbers; for example, 36=2 to power 2 3 to power 3
  30. math

    You can use the prime factorization of a number, written as the product of powers of prime numbers, to find the number of factors the number has. First, express the number as a product of powers of prime numbers; for example, 36=2 to power 2 3 to power 3
  31. math

    You can use the prime factorization of a number, written as the product of powers of prime numbers, to find the number of factors the number has. First, express the number as a product of powers of prime numbers; for example, 36=2^2 3^2 (that is 2 squared
  32. math

    Part 1:Is it possible for a composite number to have more than one prime factorization? Is it possible for a number to have no prime factors? Why? I think it is possible for a composite to have more then one prime factorization Part 2: Give an example of
  33. math

    I am a prime number between 40 and 50. If you add one to me, the sum of the prime factors of that composite number is 11. What number am I?
  34. Math

    I am a prime number between 40 and 50. If you add one to me the sum of the prime factors of that composite number is 11. What number a I.
  35. Math

    I am a prime number between 40 and 50. If you add one to me, the sum of the prime factors of that composite number is 11. What number am I?
  36. Math

    What are 2 prime numbers between 100-199 such that the tens digit is a prime number, the ones digit is a prime number, and the tens and ones digit taken together are 2 digit prime number.
  37. math algebra

    Jo needs to know which of the following cannot be a prime number whenever p is a prime number greater than 2001. A. p-2 B. p+2 C. p+999 D. p+9990 Im stuck
  38. Math

    Q. The coach of a baseball team separates the players into groups for the drills. Each group has the same number of players. Is the total number of players prime or composite, explain. - A. They really don't say the number in the book, but i would have to
  39. maths

    4x+3y=21 What is your question? You have simply stated the equation of a straight line. what is a prime factorazation?> expressing a number in terms of its Prime factors eg. 126 = 2*3*3*7 all the factors are prime numbers How does this relate to the
  40. Math

    The prime factorsof a number are the first four prime numbers. No factor is repeated. What is the number?
  41. math

    Jo needs to know which of the following cannot be a prime number whenever p is a prime number greater than 2001. A. p-2 B. p+2 C. p+999 D. p+9990
  42. math

    my number is a multiple of 5, but doesnt end in 5, the prime factorization of my number is a string three numbers, two of the numbers in the prime factorization are the same, my number is bigger than the seventh square number
  43. math

    what is my number? Clue 1 My number is a perfect number. Clue 2 The only prime number in its prime factorization is 2. Clue 3 My number is a factor of 32. Clue 4 The sum of its digits is odd.
  44. Math

    Marta is thinking of a number. The prime factorization of the number is the first eight primes, each used as a factor exactly one. Write the prime factorization and the number.
  45. Math

    What is my number? Clue 1. My number is a perfect square. Clue 2. The only prime number in its prime factorization is 2. Clue 3. My number is a factor of 32. Clue 4. The sum of its digits is odd.
  46. math

    what is my number? Clue 1 My number is a multiple of 5,but it does not end in 5. Clue 2 The prime factorization of my number is a string of three numbers. Clue 3 Two of the numbers in the prime factorizations are the same. Clue 4 My number is greater than
  47. Math

    1: Goldbach's Conjecture is a famous conjecture that has never been proven true or false. The conjecture states that every even number, except 2, can be written as the sum of two prime numbers. For example, 16 can be written as 5+11. 1 a: Write the first
  48. Math (Complex Numbers)

    Let N be the sum of all prime powers that can be written as 4^n+n^4 for some positive integer n. What are the last 3 digits of N? Details and assumptions: A prime power is a number of the form pk, where p is a prime and k is a positive integer. Examples:
  49. Algebra

    Is there any prime number whose root is an integer? I meant to say Square Root Nevermind I figured it out. Good work. If a prime number by definition has no factors, ...
  50. Math

    What is the square of the least two-digit prime number? What is the least two-digit prime number? 11 how do i show that the polygons are similar by checking that corresponding angles have equal measures and corresponding sides are proportional? 10 11 So
  51. Math

    Alice wants to find all the prime factors of the number you get when you multiply 17•11•13•7. She thinks she has to use a calculator to pay Sam although multiplications and then find the prime factorization of the resulting number. Do you agree? Why
  52. Math(Please check answers)

    Factor completely. If the polynomial cannot be factored say it is prime. 1) 15x^3 + 19x^2 + 6x A) (3x^2 +2)(5x+3) B) x(3x+2)(5x+3) C) x^2(3x+2)(5x+3) D) x(5x+2)(3x+3) E) Prime I chose E) Prime. 2) 2x^2 - 14x - 6x + 42 A) 2(x+7)(x+3) B) (x+7)(2x-6) C)
  53. Factoring and Prime

    I am still having troulbe with these. Her is another one I am stuck on. I think the prime is getting me. Factor completely or state that it is prime x^2 + 9xy + 16y^2 The factors of 16 are: 16 x 1. 8 x 2. 4 x 4. None of these add together to give 9 so it
  54. Math

    A particular fraction has a prime number in the numerator and a different prime number in the denominator. Justify whether or not this fraction can be simplified and give reasons.
  55. math

    Which number between 29 and 39 has three different prime factors?What is the prime factorization of this number?
  56. prime numbers

    Which of these is a prime number? 407, 409, 411, or 413 409 how did you get that? Suppose you are given some number N. If x<sqrt[N] then N/x will be larger than sqrt[N]. This means that any factor of N must be smaller than or equal to the square root of
  57. Calculus

    What is the largest two digit prime number whose digits are both prime numbers?
  58. Math

    Greta said that the product of two prime numbers must also be a prime number. Joan disagreed. Who is correct?
  59. math

    What is the greatest prime number you must consider to test whether 5141 is prime?
  60. Math

    Are these prime number correct all the way up to 50 (1,3,5,7,11,13,17,22,23,25,27,31,33,35,37,41,43,45,47 ) What kind of tens are prime
  61. maths

    Find the sum of the smallest 2 digit prime number and the largest 2 digit prime number.
  62. maths

    my number is less than 100 one more than a multiple of 3 one of its digits is prime if you reverse its digits you get a prime it has exactly four factors the sum of digits is prime if you miltiply it by 5 it is greater than 100
  63. Math

    What is my number? Clue 1. My number is a multiple of 5, but it does not end in 5. Clue 2. The prime factorization of my number is a string of three numbers. Clue 3. Two of the numbers in the prime factorization are the same. Clue 4. My number is greater
  64. Math

    What is my number? Clue 1: My number is a multiple of 5, but it does not end in 5. Clue 2: The prime factorization of my number is a string of three numbers. Clue 3: Two of the numbers in the prime factorization are the same. Clue 4: My number is bigger
  65. math

    find 2 prime numbers that if multiplied would generate a 400 digit number I'm not sure what you want. 400 is a three-digit number, and 4000 is a four-digit number. I don't think you want a "400 digit number." Assuming you want a number with a value over
  66. Math

    The question is this: You know that a number is divisible by 6 if it is divisible by both 3 and 2. So why isn't a number divisible by 8 if it is divisible by both 4 and 2? My answer is this: The only prime factors of 6 are 2 and 3. So, if a number is
  67. Geometry Help

    Triangles DEF and D'E'F' are shown on the coordinate plane below: Triangle DEF and triangle D prime E prime F prime with ordered pairs at D negative 1, 6, at E 1, 3, at F 6, 3, at D prime 6, 1, at E prime 3, negative 1, at F prime 3, negative 6. What
  68. math

    How do the ideas of divisibility and multiples relate to the study of fractions? Show that 1,078 and 3,315 are relatively prime. What is the shortest length of television cable that could be cut into either a whole number of 18-ft pieces or a whole number
  69. math

    how would you calculate the largest prime number given a number x so for example say someone inputs 8 , the largest prime number is 7.
  70. math

    Is "67" a prime or composite number? 67 IS A PRIME NUMBER
  71. math

    Consider the given statements. 1. Every prime number is odd. 2. There are 8 prime numbers between 10 and 40. 3. There are 11 composite numbers between 0 and 20. 4. The number 4 is the smallest even composite number. Which two given statements are
  72. math

    Consider the given statements. 1. Every prime number is odd. 2. There are 8 prime numbers between 10 and 40. 3. There are 11 composite numbers between 0 and 20. 4. The number 4 is the smallest even composite number.
  73. math last one help

    sally drew a factor tree of a composite number and ended up with 4x4x5x5x3 as the prime factorization. explain what is wrong with this factorization 1. what is the correct prime factorization? 2. what is the composite number that was factored?
  74. math

    is there a way to do this problem or do i have to just guess and check. because by guessing and checking, i can't find the right answer Name a function with the following characteristics: note: f prime means the first deriviative f is continuous over the
  75. math

    is there a way to do this problem or do i have to just guess and check. because by guessing and checking, i can't find the right answer Name a function with the following characteristics: note: f prime means the first deriviative f is continuous over the
  76. PRE-CALC

    A number is selected at random from the set {2, 3, 4, … ,10}. Which event, by definition, covers the entire sample space of this experiment? A) The number is greater than 2. B) The number is not divisible by 5. C) The number is even or less than 12. D)
  77. math(help)

    please answer this one question because im clueless lol!!! A number is written with the following factorization:2exponet is 3 multiplied 4 multplied 5. is this factorization a prime factorization?please explain to me or why not?if its not correct,please
  78. Math

    The number is not less than 20. The number is not greater than 40. The number is not divisble by 2, 3, or 7.THe number is not a prime number. THe sum of the number's digits is not 8. What's the number?
  79. Math

    What is a unit rate? what is the prime factorazation for 945? idk how to do this 10= 15= GCF= i need help with my prime factorization homework what is a prime factorazation i meed held on my homework how do u determine if the numbers are prime or composite
  80. math

    97 is the largest prime less than 100. What is the largest prime factor of 97! (97 factorial)? (Reminder: The number n! is the product of the integers from 1 to n. For example, 5!=5*4*3*2*1= 120.)
  81. Math

    Find the smallest prime number N such that the following is true: The largest prime factor of N−1 is A; The largest prime factor of A−1 is B; The largest prime factor of B−1 is 7.
  82. mathematics

    Find the smallest prime number N such that the following is true: The largest prime factor of N−1 is A; The largest prime factor of A−1 is B; The largest prime factor of B−1 is 7.
  83. College Math Probability

    Let 1 <= k <= p−1, where p is prime. Show that p choose k is a multiple of p. What if p is not prime? I think here when we expand p choose k and then input few prime numbers then we always get a multiple of p . And same with when p is not
  84. conjectures

    I'm finishing my math 20 Pure. This is my last 20 course then i have 30's. Also I have to work a full time job so that I can live on my own with my boy. So it is tough but I'm doing alright. What about you? wow, okay i have no idea what all that is but
  85. Math

    a) Find all of the numbers between 1 and 1,000 that have 2 as their only prime factor. b) What is the next number after 1,000 that had 2 as its only prime fractor?
  86. math

    The Twin Prime Conjecture, which has not been proven, argues that there are infinitely many pairs of primes of the form n and n+2. Such a pair is called a prime pair. Some examples of prime pairs are 5 and 7, 17 and 19, and 29 and 31. How many prime pairs
  87. math

    What is the greatest prime to consider to test wheather 1579 is prime. What is the greastest prime?
  88. MATH HELP

    What is the greatest prime to consider weather to test 1881 is prime. the greates prime to consider is?
  89. Pre calc

    Write the equation in standard ellipse form and graph. 34 x^2 -24xy +41y^2 +41 y^2 -25= 0. i got x= (4 x prime- 3 y prime)/5 and y=(3x prime +4y prime)/5 but cant get the correct math when I plug that into the original equation. Also I need help finding
  90. math

    Which numbers between 40 and 49 have 2 and 3 in their prime factorization?Use exponents to write the prime factorization of each number.
  91. lcm

    find the least common mutlipe of 420 196 Break down each number into prime number factors 196 = 2*2*7*7 420 = 70*2*3 = 2*2*3*5*7 The least common multiple is the product of all prime factors that occur in both numbers 2*2*3*5*7*7 = 2940
  92. MATH

    Let’s agree to say that a positive integer is prime-like if it is not divisible by 2, 3, or 5. How many prime-like positive integers are there less than 100? less than 1000? A positive integer is very prime-like if it is not divisible by any prime less
  93. math

    Let’s agree to say that a positive integer is prime-like if it is not divisible by 2, 3, or 5. How many prime-like positive integers are there less than 100? less than 1000? A positive integer is very prime-like if it is not divisible by any prime less
  94. math

    Circle the prime numbers in the following set of numbers. Show your work. 953, 1,427, 2,971 I can tell whether each number is prime but I am having a hard time with individual numbers
  95. matlab

    Im trying to figure out how to write a program that finds prime factors of a number. I have the following but it only works for the number 12 for some reason. % this program will determine if an integer is prime and determine % its prime factors function
  96. probability

    the digits 0 to 9 P(obtaining a prime number OR obtaining an odd number) P(obtaining a prime number OR obtaining a number divisible by 4) P(obtainig a number divisible by 4 or obtaining an odd number)
  97. science

    how is the equator similar to the prime meridian A. both the prime meridian and equator are lines that divide earth into norther and southern hemispheres B. both the prime meridian and equator are imaginary base lines from which locations of earth can be
  98. Math

    A number is written with the following factorization: 22 X 3 X 54 X 8 X 112. Is this factorization a prime factorization? Explain why or why not. If it is not correct, give the correct prime factorization of the number.
  99. 2nd grade

    The sum of my ones digit and tens digit is 10. My tens digit is les than my ones digit and both my digits are prime. i am a prime number. what number am i?
  100. math please

    what exactly is a prime factor would x-5 x+5 and x2+25 all be prime factors of x4-625? Yes, I believe those would be the prime factors. x^4 - 625 can be factored into (x^2 -25)(x^2 + 25) and once again into (x-5)(x+5)(x^2 + 25) That is what you have done.