Q: What are the prime factors of the number 415,728?

 A: 2, 3, 2887

Why are those the prime factors of the number 415,728?

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 415,728

415,728
Factor Arrows
2207,864
Factor Arrows
2103,932
Factor Arrows
251,966
Factor Arrows
225,983
Factor Arrows
38,661
Factor Arrows
32,887

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, 2887

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 3 x 2,887 = 415,728

This can also be written as 24 x 32 x 2,8871 = 415,728

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


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