Q: What are the prime factors of the number 811,500?

 A: 2, 3, 5, 541

Why are those the prime factors of the number 811,500?

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 811,500

811,500
Factor Arrows
2405,750
Factor Arrows
2202,875
Factor Arrows
367,625
Factor Arrows
513,525
Factor Arrows
52,705
Factor Arrows
5541

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, 541

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 5 x 5 x 5 x 541 = 811,500

This can also be written as 22 x 31 x 53 x 5411 = 811,500

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


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