Prime Numbers and Factors Quiz

Is 7 a prime number or a composite number?

• composite

• prime

Which of the following numbers is a prime number?

• 15

• 17

• 21

• 25

What are the prime factors of 28?

• 2 and 7

• 3 and 9

• 4 and 7

• 2 and 14

Is the number 29 a prime number?

• Yes

• No

Which of the following numbers is NOT a prime number?

• 11

• 13

• 18

• 19

What is the prime factorisation of 60?

Which of the following numbers is a prime number?

• 33

• 37

• 39

• 45

What are the prime factors of 45?

• 3 and 5

• 5 and 9

• 3 and 15

• 1 and 45

Is the number 51 a prime number?

• Yes

• No

Which of the following numbers is NOT a prime number?

• 23

• 29

• 31

• 35