Q: What are the prime factors of the number 27,315,120?

 A: 2, 3, 5, 7, 71, 229

Why are those the prime factors of the number 27,315,120?

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 27,315,120

27,315,120
Factor Arrows
213,657,560
Factor Arrows
26,828,780
Factor Arrows
23,414,390
Factor Arrows
21,707,195
Factor Arrows
3569,065
Factor Arrows
5113,813
Factor Arrows
716,259
Factor Arrows
71229

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, 7, 71, 229

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 5 x 7 x 71 x 229 = 27,315,120

This can also be written as 24 x 31 x 51 x 71 x 711 x 2291 = 27,315,120

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


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