Q: What are the prime factors of the number 31,676,832?

 A: 2, 3, 11, 101

Why are those the prime factors of the number 31,676,832?

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 31,676,832

31,676,832
Factor Arrows
215,838,416
Factor Arrows
27,919,208
Factor Arrows
23,959,604
Factor Arrows
21,979,802
Factor Arrows
2989,901
Factor Arrows
3329,967
Factor Arrows
3109,989
Factor Arrows
336,663
Factor Arrows
312,221
Factor Arrows
111,111
Factor Arrows
11101

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, 101

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 3 x 3 x 3 x 11 x 11 x 101 = 31,676,832

This can also be written as 25 x 34 x 112 x 1011 = 31,676,832

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


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