Q: What are the prime factors of the number 676,160?

 A: 2, 5, 2113

Why are those the prime factors of the number 676,160?

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 676,160

676,160
Factor Arrows
2338,080
Factor Arrows
2169,040
Factor Arrows
284,520
Factor Arrows
242,260
Factor Arrows
221,130
Factor Arrows
210,565
Factor Arrows
52,113

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, 2113

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 5 x 2,113 = 676,160

This can also be written as 26 x 51 x 2,1131 = 676,160

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


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