Q: What are the prime factors of the number 57,999,872?

 A: 2, 7, 16183

Why are those the prime factors of the number 57,999,872?

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 57,999,872

57,999,872
Factor Arrows
228,999,936
Factor Arrows
214,499,968
Factor Arrows
27,249,984
Factor Arrows
23,624,992
Factor Arrows
21,812,496
Factor Arrows
2906,248
Factor Arrows
2453,124
Factor Arrows
2226,562
Factor Arrows
2113,281
Factor Arrows
716,183

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, 7, 16183

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 7 x 16,183 = 57,999,872

This can also be written as 29 x 71 x 16,1831 = 57,999,872

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


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