Q: What are the prime factors of the number 115,566,720?

 A: 2, 3, 5, 23, 2617

Why are those the prime factors of the number 115,566,720?

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 115,566,720

115,566,720
Factor Arrows
257,783,360
Factor Arrows
228,891,680
Factor Arrows
214,445,840
Factor Arrows
27,222,920
Factor Arrows
23,611,460
Factor Arrows
21,805,730
Factor Arrows
2902,865
Factor Arrows
3300,955
Factor Arrows
560,191
Factor Arrows
232,617

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, 23, 2617

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 5 x 23 x 2,617 = 115,566,720

This can also be written as 27 x 31 x 51 x 231 x 2,6171 = 115,566,720

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


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