Q: What are the prime factors of the number 70,138,675?

 A: 5, 29, 89, 1087

Why are those the prime factors of the number 70,138,675?

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 70,138,675

70,138,675
Factor Arrows
514,027,735
Factor Arrows
52,805,547
Factor Arrows
2996,743
Factor Arrows
891,087

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:

5, 29, 89, 1087

We can check our work by multiplying all of the prime factors together: 5 x 5 x 29 x 89 x 1,087 = 70,138,675

This can also be written as 52 x 291 x 891 x 1,0871 = 70,138,675

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


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