Prime and Composite

What is a prime number?

• A number that has exactly two factors.

• A number with exactly one factor.

• A number with more than two factors.

One is neither prime nor composite. One is a _________.

• Unicorn

• Uniform

• Unit

The lowest prime number is _______.

• 2

• 1

• 0

• 345

Which number is prime?

• 1

• 3

• 9

Which number is composite?

• 5

• 8

• 11

What are the factors of 4?

• 1, 4

• 1, 2, 4

• 1, 4, 8

What are the factors of 5?

• 1, 5

• 1, 2, 5

• 1, 5, 25

What are the factors of 13?

• 1, 7, 13

• 1, 2, 13

• 1, 13

13 is

• a unit

• composite

• prime

13 is prime because it has exactly _____ factors.

• 1

• 2

• 3