PRIME FACTORIZATION

A prime number.......

• has one factor

• has more than 2 factors

• has 100 factors

• has exactly 2 factors: 1 and the number

Use a number tree to find the prime factorization of 111.

• 3 x 33

• 3 x 3 x 11

• 3 x 37

• 1 x 3 x 4 x 9

Is 5, a prime or composite number? 

• Prime
• Composite

Is 12, a prime or composite number? 

• Prime
• Composite

Write 28 as a product of its prime factors.

• 2x2x7
• 4x7

Which number is NOT a factor of 10?

• 1
• 2
• 3
• 5

The number 1 (one) is....

• prime

• composite

• prime and composite

• neither prime or composite

Which group are ALL prime numbers?

• 1,2,3,4,5

• 2,4,6,8,10

• 2,3,5,7,11,13

• 2,3,5,7,9,11

A composite number is a number that...

• has only two factors

• has more than two factors

• has no factors

• is always even

What is the prime factorization of 90 ?

• 2 x 3 x 3 x 5

• 2 x 5 x 9

• 2 x 3 x 5

• 3 x 30