Q: What are the prime factors of the number 815,298?

 A: 2, 3, 11, 1123

Why are those the prime factors of the number 815,298?

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 815,298

815,298
Factor Arrows
2407,649
Factor Arrows
3135,883
Factor Arrows
1112,353
Factor Arrows
111,123

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, 11, 1123

We can check our work by multiplying all of the prime factors together: 2 x 3 x 11 x 11 x 1,123 = 815,298

This can also be written as 21 x 31 x 112 x 1,1231 = 815,298

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


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