Q: What are the prime factors of the number 437,257?

 A: 17, 89

Why are those the prime factors of the number 437,257?

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 437,257

437,257
Factor Arrows
1725,721
Factor Arrows
171,513
Factor Arrows
1789

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:

17, 89

We can check our work by multiplying all of the prime factors together: 17 x 17 x 17 x 89 = 437,257

This can also be written as 173 x 891 = 437,257

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


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