Q: What are the prime factors of the number 15,011,136?

 A: 2, 3, 7, 17, 73

Why are those the prime factors of the number 15,011,136?

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 15,011,136

15,011,136
Factor Arrows
27,505,568
Factor Arrows
23,752,784
Factor Arrows
21,876,392
Factor Arrows
2938,196
Factor Arrows
2469,098
Factor Arrows
2234,549
Factor Arrows
378,183
Factor Arrows
326,061
Factor Arrows
38,687
Factor Arrows
71,241
Factor Arrows
1773

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, 7, 17, 73

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 3 x 3 x 3 x 7 x 17 x 73 = 15,011,136

This can also be written as 26 x 33 x 71 x 171 x 731 = 15,011,136

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


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