Q: What are the prime factors of the number 688,515?

 A: 3, 5, 197, 233

Why are those the prime factors of the number 688,515?

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 688,515

688,515
Factor Arrows
3229,505
Factor Arrows
545,901
Factor Arrows
197233

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, 197, 233

We can check our work by multiplying all of the prime factors together: 3 x 5 x 197 x 233 = 688,515

This can also be written as 31 x 51 x 1971 x 2331 = 688,515

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


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