Q: What are the prime factors of the number 320,021,312?

 A: 2, 13, 384641

Why are those the prime factors of the number 320,021,312?

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 320,021,312

320,021,312
Factor Arrows
2160,010,656
Factor Arrows
280,005,328
Factor Arrows
240,002,664
Factor Arrows
220,001,332
Factor Arrows
210,000,666
Factor Arrows
25,000,333
Factor Arrows
13384,641

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, 384641

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 13 x 384,641 = 320,021,312

This can also be written as 26 x 131 x 384,6411 = 320,021,312

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


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