Q: What are the prime factors of the number 57,425,920?

 A: 2, 5, 701

Why are those the prime factors of the number 57,425,920?

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 57,425,920

57,425,920
Factor Arrows
228,712,960
Factor Arrows
214,356,480
Factor Arrows
27,178,240
Factor Arrows
23,589,120
Factor Arrows
21,794,560
Factor Arrows
2897,280
Factor Arrows
2448,640
Factor Arrows
2224,320
Factor Arrows
2112,160
Factor Arrows
256,080
Factor Arrows
228,040
Factor Arrows
214,020
Factor Arrows
27,010
Factor Arrows
23,505
Factor Arrows
5701

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, 701

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 5 x 701 = 57,425,920

This can also be written as 214 x 51 x 7011 = 57,425,920

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


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