Q: What are the prime factors of the number 13,811,072?

 A: 2, 11, 17, 577

Why are those the prime factors of the number 13,811,072?

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 13,811,072

13,811,072
Factor Arrows
26,905,536
Factor Arrows
23,452,768
Factor Arrows
21,726,384
Factor Arrows
2863,192
Factor Arrows
2431,596
Factor Arrows
2215,798
Factor Arrows
2107,899
Factor Arrows
119,809
Factor Arrows
17577

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, 11, 17, 577

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 11 x 17 x 577 = 13,811,072

This can also be written as 27 x 111 x 171 x 5771 = 13,811,072

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


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