Q: What are the prime factors of the number 313,122,321?

 A: 3, 101, 199, 577

Why are those the prime factors of the number 313,122,321?

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 313,122,321

313,122,321
Factor Arrows
3104,374,107
Factor Arrows
334,791,369
Factor Arrows
311,597,123
Factor Arrows
101114,823
Factor Arrows
199577

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, 101, 199, 577

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 101 x 199 x 577 = 313,122,321

This can also be written as 33 x 1011 x 1991 x 5771 = 313,122,321

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


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