Q: What are the prime factors of the number 811,968?

 A: 2, 3, 4229

Why are those the prime factors of the number 811,968?

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 811,968

811,968
Factor Arrows
2405,984
Factor Arrows
2202,992
Factor Arrows
2101,496
Factor Arrows
250,748
Factor Arrows
225,374
Factor Arrows
212,687
Factor Arrows
34,229

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, 4229

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 4,229 = 811,968

This can also be written as 26 x 31 x 4,2291 = 811,968

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


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