Q: What are the prime factors of the number 718,656?

 A: 2, 3, 19, 197

Why are those the prime factors of the number 718,656?

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 718,656

718,656
Factor Arrows
2359,328
Factor Arrows
2179,664
Factor Arrows
289,832
Factor Arrows
244,916
Factor Arrows
222,458
Factor Arrows
211,229
Factor Arrows
33,743
Factor Arrows
19197

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, 3, 19, 197

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 3 x 19 x 197 = 718,656

This can also be written as 26 x 31 x 191 x 1971 = 718,656

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


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