Composite Prime

Which number is prime?

• 9

• 5

• 0

• 1

Composite numbers:

• Are always bigger than prime numbers

• Have more than 2 factors

• Have 2 pairs of factors

• Don't have factors

Is 12 prime or composite?

• prime

• composite

is 5 prime or composite?

• prime

• composite

Which number below is a prime number?

• 1

• 0

• 2

• 9

which number below is NOT prime?

• 7

• 9

• 2

• 3

10

• prime

• composite

Which number is NOT prime?

• 3

• 7

• 17

• 21

Prime or Composite

15

• Prime

  Exactly 2 factors - 1 & itself

• Composite

  3 or more facotrs

Prime or Composite

2

• Prime

  Exactly 2 factors - 1 & itself

• Composite

  3 or more facotrs