Q: What are the prime factors of the number 111,100,032?

 A: 2, 3, 17, 31, 61

Why are those the prime factors of the number 111,100,032?

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 111,100,032

111,100,032
Factor Arrows
255,550,016
Factor Arrows
227,775,008
Factor Arrows
213,887,504
Factor Arrows
26,943,752
Factor Arrows
23,471,876
Factor Arrows
21,735,938
Factor Arrows
2867,969
Factor Arrows
3289,323
Factor Arrows
396,441
Factor Arrows
332,147
Factor Arrows
171,891
Factor Arrows
3161

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, 17, 31, 61

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 3 x 3 x 17 x 31 x 61 = 111,100,032

This can also be written as 27 x 33 x 171 x 311 x 611 = 111,100,032

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


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