Q: What are the prime factors of the number 131,210,523?

 A: 3, 19, 9473

Why are those the prime factors of the number 131,210,523?

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 131,210,523

131,210,523
Factor Arrows
343,736,841
Factor Arrows
314,578,947
Factor Arrows
34,859,649
Factor Arrows
31,619,883
Factor Arrows
3539,961
Factor Arrows
3179,987
Factor Arrows
199,473

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, 19, 9473

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 3 x 3 x 3 x 19 x 9,473 = 131,210,523

This can also be written as 36 x 191 x 9,4731 = 131,210,523

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


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