Q: What are the prime factors of the number 14,431,872?

 A: 2, 3, 7, 13, 59

Why are those the prime factors of the number 14,431,872?

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 14,431,872

14,431,872
Factor Arrows
27,215,936
Factor Arrows
23,607,968
Factor Arrows
21,803,984
Factor Arrows
2901,992
Factor Arrows
2450,996
Factor Arrows
2225,498
Factor Arrows
2112,749
Factor Arrows
337,583
Factor Arrows
75,369
Factor Arrows
7767
Factor Arrows
1359

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, 7, 13, 59

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 3 x 7 x 7 x 13 x 59 = 14,431,872

This can also be written as 27 x 31 x 72 x 131 x 591 = 14,431,872

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


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