Q: What are the prime factors of the number 111,413,568?

 A: 2, 3, 7, 19, 4363

Why are those the prime factors of the number 111,413,568?

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 111,413,568

111,413,568
Factor Arrows
255,706,784
Factor Arrows
227,853,392
Factor Arrows
213,926,696
Factor Arrows
26,963,348
Factor Arrows
23,481,674
Factor Arrows
21,740,837
Factor Arrows
3580,279
Factor Arrows
782,897
Factor Arrows
194,363

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, 7, 19, 4363

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 3 x 7 x 19 x 4,363 = 111,413,568

This can also be written as 26 x 31 x 71 x 191 x 4,3631 = 111,413,568

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


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