Q: What are the prime factors of the number 315,776?

 A: 2, 2467

Why are those the prime factors of the number 315,776?

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 315,776

315,776
Factor Arrows
2157,888
Factor Arrows
278,944
Factor Arrows
239,472
Factor Arrows
219,736
Factor Arrows
29,868
Factor Arrows
24,934
Factor Arrows
22,467

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, 2467

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 2 x 2,467 = 315,776

This can also be written as 27 x 2,4671 = 315,776

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


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