Q: What are the prime factors of the number 125,627,680?

 A: 2, 5, 67, 11719

Why are those the prime factors of the number 125,627,680?

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 125,627,680

125,627,680
Factor Arrows
262,813,840
Factor Arrows
231,406,920
Factor Arrows
215,703,460
Factor Arrows
27,851,730
Factor Arrows
23,925,865
Factor Arrows
5785,173
Factor Arrows
6711,719

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, 67, 11719

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 5 x 67 x 11,719 = 125,627,680

This can also be written as 25 x 51 x 671 x 11,7191 = 125,627,680

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


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