Q: What are the prime factors of the number 682,605?

 A: 3, 5, 7, 11, 197

Why are those the prime factors of the number 682,605?

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 682,605

682,605
Factor Arrows
3227,535
Factor Arrows
375,845
Factor Arrows
515,169
Factor Arrows
72,167
Factor Arrows
11197

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, 7, 11, 197

We can check our work by multiplying all of the prime factors together: 3 x 3 x 5 x 7 x 11 x 197 = 682,605

This can also be written as 32 x 51 x 71 x 111 x 1971 = 682,605

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


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