Q: What are the prime factors of the number 31,663,224?

 A: 2, 3, 131, 373

Why are those the prime factors of the number 31,663,224?

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 31,663,224

31,663,224
Factor Arrows
215,831,612
Factor Arrows
27,915,806
Factor Arrows
23,957,903
Factor Arrows
31,319,301
Factor Arrows
3439,767
Factor Arrows
3146,589
Factor Arrows
348,863
Factor Arrows
131373

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, 131, 373

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 3 x 131 x 373 = 31,663,224

This can also be written as 23 x 34 x 1311 x 3731 = 31,663,224

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


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