Q: What are the prime factors of the number 27,412,320?

 A: 2, 3, 5, 13, 23, 191

Why are those the prime factors of the number 27,412,320?

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 27,412,320

27,412,320
Factor Arrows
213,706,160
Factor Arrows
26,853,080
Factor Arrows
23,426,540
Factor Arrows
21,713,270
Factor Arrows
2856,635
Factor Arrows
3285,545
Factor Arrows
557,109
Factor Arrows
134,393
Factor Arrows
23191

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, 5, 13, 23, 191

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 5 x 13 x 23 x 191 = 27,412,320

This can also be written as 25 x 31 x 51 x 131 x 231 x 1911 = 27,412,320

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


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