Prime Factorization Homework

Which of the following numbers is a prime number?

• 4

• 7

• 9

• 12

What is a composite number?

• A number with only two factors, 1 and itself

• A number with more than two factors

• A number that is divisible by 1 only

• A number that is divisible by itself only

Using divisibility rules, which of the following numbers is divisible by 3?

• 14

• 21

• 25

• 31

What is the prime factorization of 30?

Which of the following numbers is not a prime number?

• 11

• 13

• 15

• 17

What is the smallest prime number?

• 0

• 1

• 2

• 3

Which of the following numbers is a composite number?

• 2

• 3

• 5

• 8

Using a factor tree, what are the prime factors of 24?

Which of the following numbers is divisible by 5?

• 22

• 35

• 47

• 53

What is the prime factorization of 50?