Q: What are the prime factors of the number 312,345,330?

 A: 2, 3, 5, 11, 71, 13331

Why are those the prime factors of the number 312,345,330?

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 312,345,330

312,345,330
Factor Arrows
2156,172,665
Factor Arrows
352,057,555
Factor Arrows
510,411,511
Factor Arrows
11946,501
Factor Arrows
7113,331

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, 5, 11, 71, 13331

We can check our work by multiplying all of the prime factors together: 2 x 3 x 5 x 11 x 71 x 13,331 = 312,345,330

This can also be written as 21 x 31 x 51 x 111 x 711 x 13,3311 = 312,345,330

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


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