Q: What are the prime factors of the number 320,411,312?

 A: 2, 13, 421, 3659

Why are those the prime factors of the number 320,411,312?

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 320,411,312

320,411,312
Factor Arrows
2160,205,656
Factor Arrows
280,102,828
Factor Arrows
240,051,414
Factor Arrows
220,025,707
Factor Arrows
131,540,439
Factor Arrows
4213,659

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, 13, 421, 3659

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 13 x 421 x 3,659 = 320,411,312

This can also be written as 24 x 131 x 4211 x 3,6591 = 320,411,312

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


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