Q: What are the prime factors of the number 371,681,170?

 A: 2, 5, 7, 47, 16139

Why are those the prime factors of the number 371,681,170?

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 371,681,170

371,681,170
Factor Arrows
2185,840,585
Factor Arrows
537,168,117
Factor Arrows
75,309,731
Factor Arrows
7758,533
Factor Arrows
4716,139

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, 5, 7, 47, 16139

We can check our work by multiplying all of the prime factors together: 2 x 5 x 7 x 7 x 47 x 16,139 = 371,681,170

This can also be written as 21 x 51 x 72 x 471 x 16,1391 = 371,681,170

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


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