Q: What are the prime factors of the number 22,115,028?

 A: 2, 3, 13, 17, 31, 269

Why are those the prime factors of the number 22,115,028?

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 22,115,028

22,115,028
Factor Arrows
211,057,514
Factor Arrows
25,528,757
Factor Arrows
31,842,919
Factor Arrows
13141,763
Factor Arrows
178,339
Factor Arrows
31269

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, 3, 13, 17, 31, 269

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 13 x 17 x 31 x 269 = 22,115,028

This can also be written as 22 x 31 x 131 x 171 x 311 x 2691 = 22,115,028

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


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