Q: What are the prime factors of the number 15,034,656?

 A: 2, 3, 7, 13, 1721

Why are those the prime factors of the number 15,034,656?

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 15,034,656

15,034,656
Factor Arrows
27,517,328
Factor Arrows
23,758,664
Factor Arrows
21,879,332
Factor Arrows
2939,666
Factor Arrows
2469,833
Factor Arrows
3156,611
Factor Arrows
722,373
Factor Arrows
131,721

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, 13, 1721

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 7 x 13 x 1,721 = 15,034,656

This can also be written as 25 x 31 x 71 x 131 x 1,7211 = 15,034,656

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


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