Prime Factorization

Use a number tree to find the prime factorization of 32

• 2 x 2 x 2 x 3

• 2 x 2 x 2 x 2 x 2

Which is the prime factorization of 12?

• 2 x 2 x 3

• 2 + 2 + 2 + 2 + 2 + 2

Find the prime factorization of 38.

• 38 = 2 x 19

• 38 = 5 x 6 x 8

• 38 = 5 x 6 x 6

A composite number ...

• has more than 2 factors.
• has one factor.
• has at least 10 factors.
• is always a really big number.

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

Which is the prime factorization of 12? 

• 2 x 6
• 2 + 2 + 2 + 2 + 2 + 2 
• 2² x 3
• 1 x 2² x 3

Using a Factor Tree, find the prime factorization of 75.  

• 5² x 3
• 5 x 5 x 3
• 3² x 5
• 15 x 5

What number has the prime factorization of 2³ • 11?

• 55

• 66

• 88

• 99

A composite number

• has more than 2 factors
• has one factor
• has at least 10 factors
• is always a really big number

2 x 2 x 2 is the prime factorization of

• 6
• 12
• 22
• 8