Q: What are the prime factors of the number 311,102,312?

 A: 2, 17, 859, 2663

Why are those the prime factors of the number 311,102,312?

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 311,102,312

311,102,312
Factor Arrows
2155,551,156
Factor Arrows
277,775,578
Factor Arrows
238,887,789
Factor Arrows
172,287,517
Factor Arrows
8592,663

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, 17, 859, 2663

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 17 x 859 x 2,663 = 311,102,312

This can also be written as 23 x 171 x 8591 x 2,6631 = 311,102,312

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


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