5 Prime Factorization 6th

What is the prime factorization of 20 written in exponential notation?

• 2 x 5
• 1 x 20
• 2 x 10
• 2² x 5

What is the prime factorization of 18?

• 9 x 2
• 3 x 2²
• 3² x 2
• 3³

A prime number...

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

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 5 is the prime factorization for which number?

Is 5, a prime or composite number? 

• Prime
• Composite

Answer explanation

Is 12, a prime or composite number? 

• Prime
• Composite

All of these are prime except

• 17

• 9
• 2
• 13

If the expanded form is 2⋅2⋅2⋅3⋅3⋅5⋅7 what would the exponential form be?

• 2⋅3⋅5⋅7
• 2³⋅3²⋅5⋅7
• 2²⋅3²⋅5⋅7
• 8⋅9⋅35

What is the prime factorization of 16 ? 

• 1 x 16
• 2²x 4
• 2⁴
• 2² + 2²