Q: What are the prime factors of the number 812,480?

 A: 2, 5, 2539

Why are those the prime factors of the number 812,480?

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 812,480

812,480
Factor Arrows
2406,240
Factor Arrows
2203,120
Factor Arrows
2101,560
Factor Arrows
250,780
Factor Arrows
225,390
Factor Arrows
212,695
Factor Arrows
52,539

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, 5, 2539

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 5 x 2,539 = 812,480

This can also be written as 26 x 51 x 2,5391 = 812,480

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


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