Q: What are the prime factors of the number 578,367?

 A: 3, 31, 691

Why are those the prime factors of the number 578,367?

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 578,367

578,367
Factor Arrows
3192,789
Factor Arrows
364,263
Factor Arrows
321,421
Factor Arrows
31691

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:

3, 31, 691

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 31 x 691 = 578,367

This can also be written as 33 x 311 x 6911 = 578,367

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


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