Q: What are the prime factors of the number 677,960?

 A: 2, 5, 17, 997

Why are those the prime factors of the number 677,960?

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 677,960

677,960
Factor Arrows
2338,980
Factor Arrows
2169,490
Factor Arrows
284,745
Factor Arrows
516,949
Factor Arrows
17997

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:

2, 5, 17, 997

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 17 x 997 = 677,960

This can also be written as 23 x 51 x 171 x 9971 = 677,960

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


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