Q: What are the prime factors of the number 17,331,072?

 A: 2, 3, 11, 373

Why are those the prime factors of the number 17,331,072?

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 17,331,072

17,331,072
Factor Arrows
28,665,536
Factor Arrows
24,332,768
Factor Arrows
22,166,384
Factor Arrows
21,083,192
Factor Arrows
2541,596
Factor Arrows
2270,798
Factor Arrows
2135,399
Factor Arrows
345,133
Factor Arrows
114,103
Factor Arrows
11373

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, 373

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 11 x 11 x 373 = 17,331,072

This can also be written as 27 x 31 x 112 x 3731 = 17,331,072

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


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