Q: What are the prime factors of the number 407,808?

 A: 2, 3, 59

Why are those the prime factors of the number 407,808?

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 407,808

407,808
Factor Arrows
2203,904
Factor Arrows
2101,952
Factor Arrows
250,976
Factor Arrows
225,488
Factor Arrows
212,744
Factor Arrows
26,372
Factor Arrows
23,186
Factor Arrows
21,593
Factor Arrows
3531
Factor Arrows
3177
Factor Arrows
359

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, 59

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 2 x 2 x 3 x 3 x 3 x 59 = 407,808

This can also be written as 28 x 33 x 591 = 407,808

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


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