Q: What are the prime factors of the number 724,372,185?

 A: 3, 5, 349, 138371

Why are those the prime factors of the number 724,372,185?

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 724,372,185

724,372,185
Factor Arrows
3241,457,395
Factor Arrows
548,291,479
Factor Arrows
349138,371

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, 5, 349, 138371

We can check our work by multiplying all of the prime factors together: 3 x 5 x 349 x 138,371 = 724,372,185

This can also be written as 31 x 51 x 3491 x 138,3711 = 724,372,185

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


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