Q: What are the prime factors of the number 725,274,320?

 A: 2, 5, 167, 54287

Why are those the prime factors of the number 725,274,320?

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 725,274,320

725,274,320
Factor Arrows
2362,637,160
Factor Arrows
2181,318,580
Factor Arrows
290,659,290
Factor Arrows
245,329,645
Factor Arrows
59,065,929
Factor Arrows
16754,287

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, 5, 167, 54287

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 167 x 54,287 = 725,274,320

This can also be written as 24 x 51 x 1671 x 54,2871 = 725,274,320

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


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