Q: What are the prime factors of the number 811,584?

 A: 2, 3, 1409

Why are those the prime factors of the number 811,584?

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 811,584

811,584
Factor Arrows
2405,792
Factor Arrows
2202,896
Factor Arrows
2101,448
Factor Arrows
250,724
Factor Arrows
225,362
Factor Arrows
212,681
Factor Arrows
34,227
Factor Arrows
31,409

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, 1409

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 3 x 3 x 1,409 = 811,584

This can also be written as 26 x 32 x 1,4091 = 811,584

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


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