Q: What are the prime factors of the number 22,813,840?

 A: 2, 5, 7, 40739

Why are those the prime factors of the number 22,813,840?

Prime factors are the prime numbers that can be multipled together to equal the original number. You find the factors by dividing by prime numbers. It is best shown by creating a Factor Tree.

Factor Tree for the number 22,813,840

22,813,840
Factor Arrows
211,406,920
Factor Arrows
25,703,460
Factor Arrows
22,851,730
Factor Arrows
21,425,865
Factor Arrows
5285,173
Factor Arrows
740,739

The numbers in bold above are the prime factors. If there are multiples, you only count them one time. This leads us to our prime factors of:

2, 5, 7, 40739

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 7 x 40,739 = 22,813,840

This can also be written as 24 x 51 x 71 x 40,7391 = 22,813,840

If you would like to know more, or need additional explanation, please review our prime factorization explanation.


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