Q: What are the prime factors of the number 120,580,731?

 A: 3, 31, 16007

Why are those the prime factors of the number 120,580,731?

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 120,580,731

120,580,731
Factor Arrows
340,193,577
Factor Arrows
313,397,859
Factor Arrows
34,465,953
Factor Arrows
31,488,651
Factor Arrows
3496,217
Factor Arrows
3116,007

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, 31, 16007

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 3 x 3 x 31 x 16,007 = 120,580,731

This can also be written as 35 x 311 x 16,0071 = 120,580,731

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


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