Q: What are the prime factors of the number 689,577?

 A: 3, 7, 4691

Why are those the prime factors of the number 689,577?

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 689,577

689,577
Factor Arrows
3229,859
Factor Arrows
732,837
Factor Arrows
74,691

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, 7, 4691

We can check our work by multiplying all of the prime factors together: 3 x 7 x 7 x 4,691 = 689,577

This can also be written as 31 x 72 x 4,6911 = 689,577

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


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