Q: What are the prime factors of the number 15,135,232?

 A: 2, 7, 41, 103

Why are those the prime factors of the number 15,135,232?

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 15,135,232

15,135,232
Factor Arrows
27,567,616
Factor Arrows
23,783,808
Factor Arrows
21,891,904
Factor Arrows
2945,952
Factor Arrows
2472,976
Factor Arrows
2236,488
Factor Arrows
2118,244
Factor Arrows
259,122
Factor Arrows
229,561
Factor Arrows
74,223
Factor Arrows
41103

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, 7, 41, 103

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 7 x 41 x 103 = 15,135,232

This can also be written as 29 x 71 x 411 x 1031 = 15,135,232

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


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