Q: What are the prime factors of the number 22,115,025?

 A: 3, 5, 67, 163

Why are those the prime factors of the number 22,115,025?

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 22,115,025

22,115,025
Factor Arrows
37,371,675
Factor Arrows
32,457,225
Factor Arrows
3819,075
Factor Arrows
3273,025
Factor Arrows
554,605
Factor Arrows
510,921
Factor Arrows
67163

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:

3, 5, 67, 163

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 3 x 5 x 5 x 67 x 163 = 22,115,025

This can also be written as 34 x 52 x 671 x 1631 = 22,115,025

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


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