Q: What are the prime factors of the number 15,800,904?

 A: 2, 3, 7, 107, 293

Why are those the prime factors of the number 15,800,904?

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 15,800,904

15,800,904
Factor Arrows
27,900,452
Factor Arrows
23,950,226
Factor Arrows
21,975,113
Factor Arrows
3658,371
Factor Arrows
3219,457
Factor Arrows
731,351
Factor Arrows
107293

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, 107, 293

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 7 x 107 x 293 = 15,800,904

This can also be written as 23 x 32 x 71 x 1071 x 2931 = 15,800,904

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


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