2-6 Prime Factorization

A prime number...

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

Answer explanation

A composite number ...

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

Answer explanation

One is... 

• prime
• composite
• not prime or composite
• the loneliest number that you'll ever know

Which of the following is NOT prime?

• 29
• 23
• 17
• 6

Is 5, a prime or composite number? 

• Prime
• Composite

Answer explanation

Is 12, a prime or composite number? 

• Prime
• Composite

Is 17, a prime or composite number? 

• Prime
• Composite

Is 34, a prime or composite number? 

• Prime
• Composite

Answer explanation

What number is never allowed in a factor tree? 

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

All of these are prime except

• 17

• 9
• 2
• 13