Q: What are the prime factors of the number 122,160?

 A: 2, 3, 5, 509

Why are those the prime factors of the number 122,160?

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 122,160

122,160
Factor Arrows
261,080
Factor Arrows
230,540
Factor Arrows
215,270
Factor Arrows
27,635
Factor Arrows
32,545
Factor Arrows
5509

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, 5, 509

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 5 x 509 = 122,160

This can also be written as 24 x 31 x 51 x 5091 = 122,160

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


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