Q: What are the prime factors of the number 120,501,864?

 A: 2, 3, 7, 79697

Why are those the prime factors of the number 120,501,864?

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 120,501,864

120,501,864
Factor Arrows
260,250,932
Factor Arrows
230,125,466
Factor Arrows
215,062,733
Factor Arrows
35,020,911
Factor Arrows
31,673,637
Factor Arrows
3557,879
Factor Arrows
779,697

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, 7, 79697

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 3 x 7 x 79,697 = 120,501,864

This can also be written as 23 x 33 x 71 x 79,6971 = 120,501,864

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


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