Prime Factorization

A prime number

• has one factor
• has more than 2 factors
• has 100 factors
• has exactly 2 factors: 1 and the number

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

What is the prime factorization of 33?

• 33

• 11x3

• 10x3

• 3x3x3x2

One is...

• prime

• composite

• not prime or composite

• the loneliest number

Is 5, a prime or composite number? 

• Prime
• Composite

Is 12, a prime or composite number? 

• Prime
• Composite

Is 17, a prime or composite number? 

• Prime
• Composite

Use a factor tree to find the prime factorization of 105

• 7x5x3

• 11x5x3

• 7x5x2x1

• 7x5x3x2

What number is never allowed in a factor tree? 

• 13 (it's bad luck!)
• 1 
• 8675309
• 2