Q: What are the prime factors of the number 311,033,344?

 A: 2, 19, 31973

Why are those the prime factors of the number 311,033,344?

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 311,033,344

311,033,344
Factor Arrows
2155,516,672
Factor Arrows
277,758,336
Factor Arrows
238,879,168
Factor Arrows
219,439,584
Factor Arrows
29,719,792
Factor Arrows
24,859,896
Factor Arrows
22,429,948
Factor Arrows
21,214,974
Factor Arrows
2607,487
Factor Arrows
1931,973

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, 19, 31973

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 19 x 31,973 = 311,033,344

This can also be written as 29 x 191 x 31,9731 = 311,033,344

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


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