Q: What are the prime factors of the number 322,113,312?

 A: 2, 3, 31, 109, 331

Why are those the prime factors of the number 322,113,312?

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 322,113,312

322,113,312
Factor Arrows
2161,056,656
Factor Arrows
280,528,328
Factor Arrows
240,264,164
Factor Arrows
220,132,082
Factor Arrows
210,066,041
Factor Arrows
33,355,347
Factor Arrows
31,118,449
Factor Arrows
3136,079
Factor Arrows
109331

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, 31, 109, 331

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 3 x 31 x 109 x 331 = 322,113,312

This can also be written as 25 x 32 x 311 x 1091 x 3311 = 322,113,312

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


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