Q: What are the prime factors of the number 386,304?

 A: 2, 3, 503

Why are those the prime factors of the number 386,304?

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 386,304

386,304
Factor Arrows
2193,152
Factor Arrows
296,576
Factor Arrows
248,288
Factor Arrows
224,144
Factor Arrows
212,072
Factor Arrows
26,036
Factor Arrows
23,018
Factor Arrows
21,509
Factor Arrows
3503

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, 503

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 3 x 503 = 386,304

This can also be written as 28 x 31 x 5031 = 386,304

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


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