Q: What are the prime factors of the number 815,488?

 A: 2, 23, 277

Why are those the prime factors of the number 815,488?

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 815,488

815,488
Factor Arrows
2407,744
Factor Arrows
2203,872
Factor Arrows
2101,936
Factor Arrows
250,968
Factor Arrows
225,484
Factor Arrows
212,742
Factor Arrows
26,371
Factor Arrows
23277

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, 23, 277

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 23 x 277 = 815,488

This can also be written as 27 x 231 x 2771 = 815,488

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


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