Q: What are the prime factors of the number 131,427?

 A: 3, 17, 859

Why are those the prime factors of the number 131,427?

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 131,427

131,427
Factor Arrows
343,809
Factor Arrows
314,603
Factor Arrows
17859

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, 17, 859

We can check our work by multiplying all of the prime factors together: 3 x 3 x 17 x 859 = 131,427

This can also be written as 32 x 171 x 8591 = 131,427

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


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