Q: What are the prime factors of the number 313,056,768?

 A: 2, 3, 17, 19, 631

Why are those the prime factors of the number 313,056,768?

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 313,056,768

313,056,768
Factor Arrows
2156,528,384
Factor Arrows
278,264,192
Factor Arrows
239,132,096
Factor Arrows
219,566,048
Factor Arrows
29,783,024
Factor Arrows
24,891,512
Factor Arrows
22,445,756
Factor Arrows
21,222,878
Factor Arrows
2611,439
Factor Arrows
3203,813
Factor Arrows
1711,989
Factor Arrows
19631

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, 17, 19, 631

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 x 2 x 3 x 17 x 19 x 631 = 313,056,768

This can also be written as 29 x 31 x 171 x 191 x 6311 = 313,056,768

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


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