Understanding Prime and Composite Numbers

What is a prime number?

• A number that has more than two factors

• A number that has exactly two factors

• A number that has only one factor

• A number that has no factors

Which of the following numbers is a prime number?

• 4

• 6

• 7

• 9

What is a composite number?

• A number that has exactly two factors

• A number that has more than two factors

• A number that has only one factor

• A number that has no factors

Which of the following numbers is a composite number?

• 2

• 3

• 5

• 8

Is the number 1 a prime number or a composite number?

• Prime number

• Composite number

• Neither

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 prime number?

• 21

• 23

• 25

• 27

How many factors does a prime number have?

• 1

• 2

• 3

• 4

Which of the following numbers is a composite number?

• 19

• 29

• 39

• 41