Q: What are the prime factors of the number 313,395?

 A: 3, 5, 17, 1229

Why are those the prime factors of the number 313,395?

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 313,395

313,395
Factor Arrows
3104,465
Factor Arrows
520,893
Factor Arrows
171,229

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:

3, 5, 17, 1229

We can check our work by multiplying all of the prime factors together: 3 x 5 x 17 x 1,229 = 313,395

This can also be written as 31 x 51 x 171 x 1,2291 = 313,395

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


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