# What is the prime factorization of 90?

##### 1 Answer

Apr 7, 2016

2,3,3,5

#### Explanation:

Using the smallest prime, 2, divide 90.

The smallest prime will not go into 45, so divide by the next smallest prime, 3.

But 15 is also divisible by 3, so divide again.

5 is a prime number, so the prime factors of 90 are... 2x3x3x5