Q: What are the prime factors of the number 323,118,315?

 A: 3, 5, 13, 2273

Why are those the prime factors of the number 323,118,315?

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 323,118,315

323,118,315
Factor Arrows
3107,706,105
Factor Arrows
335,902,035
Factor Arrows
311,967,345
Factor Arrows
33,989,115
Factor Arrows
31,329,705
Factor Arrows
3443,235
Factor Arrows
3147,745
Factor Arrows
529,549
Factor Arrows
132,273

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, 13, 2273

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 3 x 3 x 3 x 3 x 5 x 13 x 2,273 = 323,118,315

This can also be written as 37 x 51 x 131 x 2,2731 = 323,118,315

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


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