Q: What are the prime factors of the number 311,513,514?

 A: 2, 3, 13, 307, 13009

Why are those the prime factors of the number 311,513,514?

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 311,513,514

311,513,514
Factor Arrows
2155,756,757
Factor Arrows
351,918,919
Factor Arrows
133,993,763
Factor Arrows
30713,009

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, 3, 13, 307, 13009

We can check our work by multiplying all of the prime factors together: 2 x 3 x 13 x 307 x 13,009 = 311,513,514

This can also be written as 21 x 31 x 131 x 3071 x 13,0091 = 311,513,514

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


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