Consider the numbers 13, 16, 27, and 41. a. Which of these numbers are prime? How do you know? b. Which of these numbers are composite? How do you know?
a. The number 13 is prime because it only has two factors, 1 and 13.
The number 16 is not prime because it has more than two factors, including 1, 2, 4, 8, and 16.
The number 27 is not prime because it has more than two factors, including 1, 3, 9, and 27.
The number 41 is prime because it only has two factors, 1 and 41.
b. The number 13 is not composite because it only has two factors, 1 and 13.
The number 16 is composite because it has more than two factors.
The number 27 is composite because it has more than two factors.
The number 41 is not composite because it only has two factors, 1 and 41.