Q: What are the prime factors of the number 819,360?

 A: 2, 3, 5, 569

Why are those the prime factors of the number 819,360?

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 819,360

819,360
Factor Arrows
2409,680
Factor Arrows
2204,840
Factor Arrows
2102,420
Factor Arrows
251,210
Factor Arrows
225,605
Factor Arrows
38,535
Factor Arrows
32,845
Factor Arrows
5569

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, 5, 569

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 3 x 5 x 569 = 819,360

This can also be written as 25 x 32 x 51 x 5691 = 819,360

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


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