Q: What are the prime factors of the number 311,260,103?

 A: 7, 11, 29, 19913

Why are those the prime factors of the number 311,260,103?

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 311,260,103

311,260,103
Factor Arrows
744,465,729
Factor Arrows
76,352,247
Factor Arrows
11577,477
Factor Arrows
2919,913

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:

7, 11, 29, 19913

We can check our work by multiplying all of the prime factors together: 7 x 7 x 11 x 29 x 19,913 = 311,260,103

This can also be written as 72 x 111 x 291 x 19,9131 = 311,260,103

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


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