Q: What are the prime factors of the number 57,165?

 A: 3, 5, 37, 103

Why are those the prime factors of the number 57,165?

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 57,165

57,165
Factor Arrows
319,055
Factor Arrows
53,811
Factor Arrows
37103

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:

3, 5, 37, 103

We can check our work by multiplying all of the prime factors together: 3 x 5 x 37 x 103 = 57,165

This can also be written as 31 x 51 x 371 x 1031 = 57,165

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


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