Q: What are the prime factors of the number 811,188?

 A: 2, 3, 7, 29, 37

Why are those the prime factors of the number 811,188?

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 811,188

811,188
Factor Arrows
2405,594
Factor Arrows
2202,797
Factor Arrows
367,599
Factor Arrows
322,533
Factor Arrows
37,511
Factor Arrows
71,073
Factor Arrows
2937

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, 7, 29, 37

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 3 x 7 x 29 x 37 = 811,188

This can also be written as 22 x 33 x 71 x 291 x 371 = 811,188

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


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