# What are the prime factors of 45?

##### 2 Answers

Mar 7, 2018

#### Answer:

#### Explanation:

When doing prime factors, I like to start with a quick math fact I know (if I know one) and start there:

5 is prime but 9 is not:

3 and 5 are both prime and so we're done

Mar 7, 2018

#### Answer:

5,3.

#### Explanation:

Prime numbers from 0 - 10 are: 2,3,5,7.

Lets divide 45 in the short division method using prime numbers only.

therefore factors of 45 are: