Q: What are the prime factors of the number 85,363,470?

 A: 2, 3, 5, 35129

Why are those the prime factors of the number 85,363,470?

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 85,363,470

85,363,470
Factor Arrows
242,681,735
Factor Arrows
314,227,245
Factor Arrows
34,742,415
Factor Arrows
31,580,805
Factor Arrows
3526,935
Factor Arrows
3175,645
Factor Arrows
535,129

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, 5, 35129

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 3 x 3 x 5 x 35,129 = 85,363,470

This can also be written as 21 x 35 x 51 x 35,1291 = 85,363,470

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


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