Q: What are the prime factors of the number 131,886?

 A: 2, 3, 17, 431

Why are those the prime factors of the number 131,886?

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 131,886

131,886
Factor Arrows
265,943
Factor Arrows
321,981
Factor Arrows
37,327
Factor Arrows
17431

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, 17, 431

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 17 x 431 = 131,886

This can also be written as 21 x 32 x 171 x 4311 = 131,886

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


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