Q: What are the prime factors of the number 815,016?

 A: 2, 3, 29, 1171

Why are those the prime factors of the number 815,016?

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 815,016

815,016
Factor Arrows
2407,508
Factor Arrows
2203,754
Factor Arrows
2101,877
Factor Arrows
333,959
Factor Arrows
291,171

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, 29, 1171

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 29 x 1,171 = 815,016

This can also be written as 23 x 31 x 291 x 1,1711 = 815,016

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


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