Q: What are the prime factors of the number 115,328?

 A: 2, 17, 53

Why are those the prime factors of the number 115,328?

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 115,328

115,328
Factor Arrows
257,664
Factor Arrows
228,832
Factor Arrows
214,416
Factor Arrows
27,208
Factor Arrows
23,604
Factor Arrows
21,802
Factor Arrows
2901
Factor Arrows
1753

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, 17, 53

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 17 x 53 = 115,328

This can also be written as 27 x 171 x 531 = 115,328

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


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