Q: What are the prime factors of the number 725,160,660?

 A: 2, 3, 5, 7, 29, 2053

Why are those the prime factors of the number 725,160,660?

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 725,160,660

725,160,660
Factor Arrows
2362,580,330
Factor Arrows
2181,290,165
Factor Arrows
360,430,055
Factor Arrows
512,086,011
Factor Arrows
71,726,573
Factor Arrows
2959,537
Factor Arrows
292,053

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, 7, 29, 2053

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 5 x 7 x 29 x 29 x 2,053 = 725,160,660

This can also be written as 22 x 31 x 51 x 71 x 292 x 2,0531 = 725,160,660

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


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