Q: What are the prime factors of the number 815,702?

 A: 2, 37, 73, 151

Why are those the prime factors of the number 815,702?

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 815,702

815,702
Factor Arrows
2407,851
Factor Arrows
3711,023
Factor Arrows
73151

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, 37, 73, 151

We can check our work by multiplying all of the prime factors together: 2 x 37 x 73 x 151 = 815,702

This can also be written as 21 x 371 x 731 x 1511 = 815,702

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


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