Wednesday

July 23, 2014

July 23, 2014

Posted by **CASSIE** on Tuesday, September 11, 2012 at 10:18pm.

- MATH -
**Jason**, Tuesday, September 11, 2012 at 10:25pmJust start at 2 and divide 255 which is (2^8)-1.

255/2 =127.5

Not divisible by 2.

255/3 = 85

We have one prime number, 3.

255/5 = 51

We have two prime numbers - 3,5.

255/7 = 36.43

Not divisible by 7

255/9 = 28.33

Not divisible by 9

255/11 = 23.18

Not divisible by 11

.

.

.

255/17 = 15

We have three prime numbers - 3,5,17.

So the sum of them are:

3+5+17 = 25

- MATH -
**Steve**, Wednesday, September 12, 2012 at 10:27amor, since a^2-b^2 = (a-b)(a+b)

(2^8-1) = (16-1)(16+1) = (4-1)(4+1)(16+1) = 3*5*17

**Related Questions**

Math - The number p is the product of three different positive prime numbers ...

math - which of these statements about prime and composite numbers is true? F)...

math - The Florida Lottery is made up of the numbers 1-49. My mother has ...

math - The Florida Lottery is made up of the numbers 1-49. My mother has ...

math - Three numbers between 70 and 80 are prime numbers.what numbers are they? ...

math - How do the ideas of divisibility and multiples relate to the study of ...

Math (Complex Numbers) - Let N be the sum of all prime powers that can be ...

math - the florida lottery is made up of the number 1-49. my mother observed ...

Math - 48,24,6,36,12,54 Which of the following describe this set. A. Numbers ...

math - What is the smallest odd numberyou can find that is the sum of three ...