Q: What are the prime factors of the number 386,358?

 A: 2, 3, 7, 9199

Why are those the prime factors of the number 386,358?

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 386,358

386,358
Factor Arrows
2193,179
Factor Arrows
364,393
Factor Arrows
79,199

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, 7, 9199

We can check our work by multiplying all of the prime factors together: 2 x 3 x 7 x 9,199 = 386,358

This can also be written as 21 x 31 x 71 x 9,1991 = 386,358

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


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