Q: What are the prime factors of the number 31,332,312?

 A: 2, 3, 11, 13187

Why are those the prime factors of the number 31,332,312?

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 31,332,312

31,332,312
Factor Arrows
215,666,156
Factor Arrows
27,833,078
Factor Arrows
23,916,539
Factor Arrows
31,305,513
Factor Arrows
3435,171
Factor Arrows
3145,057
Factor Arrows
1113,187

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, 11, 13187

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 3 x 11 x 13,187 = 31,332,312

This can also be written as 23 x 33 x 111 x 13,1871 = 31,332,312

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


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