Q: What are the prime factors of the number 386,646?

 A: 2, 3, 13, 4957

Why are those the prime factors of the number 386,646?

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 386,646

386,646
Factor Arrows
2193,323
Factor Arrows
364,441
Factor Arrows
134,957

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, 13, 4957

We can check our work by multiplying all of the prime factors together: 2 x 3 x 13 x 4,957 = 386,646

This can also be written as 21 x 31 x 131 x 4,9571 = 386,646

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


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