Q: What are the prime factors of the number 631,160?

 A: 2, 5, 31, 509

Why are those the prime factors of the number 631,160?

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 631,160

631,160
Factor Arrows
2315,580
Factor Arrows
2157,790
Factor Arrows
278,895
Factor Arrows
515,779
Factor Arrows
31509

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, 5, 31, 509

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 31 x 509 = 631,160

This can also be written as 23 x 51 x 311 x 5091 = 631,160

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


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