Q: What are the prime factors of the number 396,384?

 A: 2, 3, 4129

Why are those the prime factors of the number 396,384?

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 396,384

396,384
Factor Arrows
2198,192
Factor Arrows
299,096
Factor Arrows
249,548
Factor Arrows
224,774
Factor Arrows
212,387
Factor Arrows
34,129

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, 4129

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 4,129 = 396,384

This can also be written as 25 x 31 x 4,1291 = 396,384

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


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