Q: What are the prime factors of the number 15,311,264?

 A: 2, 19, 25183

Why are those the prime factors of the number 15,311,264?

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 15,311,264

15,311,264
Factor Arrows
27,655,632
Factor Arrows
23,827,816
Factor Arrows
21,913,908
Factor Arrows
2956,954
Factor Arrows
2478,477
Factor Arrows
1925,183

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, 19, 25183

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 19 x 25,183 = 15,311,264

This can also be written as 25 x 191 x 25,1831 = 15,311,264

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


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