Q: What are the prime factors of the number 668,727?

 A: 3, 67, 1109

Why are those the prime factors of the number 668,727?

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 668,727

668,727
Factor Arrows
3222,909
Factor Arrows
374,303
Factor Arrows
671,109

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, 67, 1109

We can check our work by multiplying all of the prime factors together: 3 x 3 x 67 x 1,109 = 668,727

This can also be written as 32 x 671 x 1,1091 = 668,727

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


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