Q: What are the prime factors of the number 120,513,024?

 A: 2, 3, 26153

Why are those the prime factors of the number 120,513,024?

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 120,513,024

120,513,024
Factor Arrows
260,256,512
Factor Arrows
230,128,256
Factor Arrows
215,064,128
Factor Arrows
27,532,064
Factor Arrows
23,766,032
Factor Arrows
21,883,016
Factor Arrows
2941,508
Factor Arrows
2470,754
Factor Arrows
2235,377
Factor Arrows
378,459
Factor Arrows
326,153

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, 26153

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 2 x 2 x 3 x 3 x 26,153 = 120,513,024

This can also be written as 29 x 32 x 26,1531 = 120,513,024

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


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