Q: What are the prime factors of the number 724,523?

 A: 17, 23, 109

Why are those the prime factors of the number 724,523?

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 724,523

724,523
Factor Arrows
1742,619
Factor Arrows
172,507
Factor Arrows
23109

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:

17, 23, 109

We can check our work by multiplying all of the prime factors together: 17 x 17 x 23 x 109 = 724,523

This can also be written as 172 x 231 x 1091 = 724,523

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


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