Q: What are the prime factors of the number 312,333,105?

 A: 3, 5, 7, 251, 1693

Why are those the prime factors of the number 312,333,105?

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 312,333,105

312,333,105
Factor Arrows
3104,111,035
Factor Arrows
520,822,207
Factor Arrows
72,974,601
Factor Arrows
7424,943
Factor Arrows
2511,693

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, 5, 7, 251, 1693

We can check our work by multiplying all of the prime factors together: 3 x 5 x 7 x 7 x 251 x 1,693 = 312,333,105

This can also be written as 31 x 51 x 72 x 2511 x 1,6931 = 312,333,105

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


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