Q: What are the prime factors of the number 657,528?

 A: 2, 3, 27397

Why are those the prime factors of the number 657,528?

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 657,528

657,528
Factor Arrows
2328,764
Factor Arrows
2164,382
Factor Arrows
282,191
Factor Arrows
327,397

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, 3, 27397

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 27,397 = 657,528

This can also be written as 23 x 31 x 27,3971 = 657,528

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


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