Q: What are the prime factors of the number 131,173,887?

 A: 3, 13, 17, 53, 3733

Why are those the prime factors of the number 131,173,887?

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 131,173,887

131,173,887
Factor Arrows
343,724,629
Factor Arrows
133,363,433
Factor Arrows
17197,849
Factor Arrows
533,733

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:

3, 13, 17, 53, 3733

We can check our work by multiplying all of the prime factors together: 3 x 13 x 17 x 53 x 3,733 = 131,173,887

This can also be written as 31 x 131 x 171 x 531 x 3,7331 = 131,173,887

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


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