Q: What are the prime factors of the number 386,828?

 A: 2, 13, 43, 173

Why are those the prime factors of the number 386,828?

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 386,828

386,828
Factor Arrows
2193,414
Factor Arrows
296,707
Factor Arrows
137,439
Factor Arrows
43173

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, 13, 43, 173

We can check our work by multiplying all of the prime factors together: 2 x 2 x 13 x 43 x 173 = 386,828

This can also be written as 22 x 131 x 431 x 1731 = 386,828

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


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