Q: What are the prime factors of the number 810,700?

 A: 2, 5, 11, 67

Why are those the prime factors of the number 810,700?

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 810,700

810,700
Factor Arrows
2405,350
Factor Arrows
2202,675
Factor Arrows
540,535
Factor Arrows
58,107
Factor Arrows
11737
Factor Arrows
1167

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, 11, 67

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 5 x 11 x 11 x 67 = 810,700

This can also be written as 22 x 52 x 112 x 671 = 810,700

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


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