Q: What are the prime factors of the number 396,088?

 A: 2, 7, 11, 643

Why are those the prime factors of the number 396,088?

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 396,088

396,088
Factor Arrows
2198,044
Factor Arrows
299,022
Factor Arrows
249,511
Factor Arrows
77,073
Factor Arrows
11643

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, 7, 11, 643

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 7 x 11 x 643 = 396,088

This can also be written as 23 x 71 x 111 x 6431 = 396,088

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


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