# How do you find the greatest common factor of 24, 28?

##### 1 Answer

#### Answer:

Find the prime factorization for both numbers and multiply all common factors.

#### Explanation:

You could find the prime factorizations of

#24 = 2^2 * 3#

#28 = 2^2 * 7#

We see that

#2^2 = 4#

There are other ways to find the GCF as well such as listing out all the factors of each number and picking out the greatest, which is a little more tedious and unnecessary.