Q: What are the prime factors of the number 31,021,344?

 A: 2, 3, 107713

Why are those the prime factors of the number 31,021,344?

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 31,021,344

31,021,344
Factor Arrows
215,510,672
Factor Arrows
27,755,336
Factor Arrows
23,877,668
Factor Arrows
21,938,834
Factor Arrows
2969,417
Factor Arrows
3323,139
Factor Arrows
3107,713

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, 107713

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 107,713 = 31,021,344

This can also be written as 25 x 32 x 107,7131 = 31,021,344

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


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