Q: What are the prime factors of the number 131,414,157?

 A: 3, 7, 23, 3359

Why are those the prime factors of the number 131,414,157?

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 131,414,157

131,414,157
Factor Arrows
343,804,719
Factor Arrows
314,601,573
Factor Arrows
34,867,191
Factor Arrows
31,622,397
Factor Arrows
3540,799
Factor Arrows
777,257
Factor Arrows
233,359

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, 7, 23, 3359

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 3 x 3 x 7 x 23 x 3,359 = 131,414,157

This can also be written as 35 x 71 x 231 x 3,3591 = 131,414,157

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


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