Q: What are the prime factors of the number 125,864,528?

 A: 2, 37, 107, 1987

Why are those the prime factors of the number 125,864,528?

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 125,864,528

125,864,528
Factor Arrows
262,932,264
Factor Arrows
231,466,132
Factor Arrows
215,733,066
Factor Arrows
27,866,533
Factor Arrows
37212,609
Factor Arrows
1071,987

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, 37, 107, 1987

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 37 x 107 x 1,987 = 125,864,528

This can also be written as 24 x 371 x 1071 x 1,9871 = 125,864,528

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


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