Q: What are the prime factors of the number 407,646?

 A: 2, 3, 7549

Why are those the prime factors of the number 407,646?

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 407,646

407,646
Factor Arrows
2203,823
Factor Arrows
367,941
Factor Arrows
322,647
Factor Arrows
37,549

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, 7549

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 7,549 = 407,646

This can also be written as 21 x 33 x 7,5491 = 407,646

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


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