Q: What are the prime factors of the number 111,508,100?

 A: 2, 5, 11, 17, 67, 89

Why are those the prime factors of the number 111,508,100?

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 111,508,100

111,508,100
Factor Arrows
255,754,050
Factor Arrows
227,877,025
Factor Arrows
55,575,405
Factor Arrows
51,115,081
Factor Arrows
11101,371
Factor Arrows
175,963
Factor Arrows
6789

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, 5, 11, 17, 67, 89

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 5 x 11 x 17 x 67 x 89 = 111,508,100

This can also be written as 22 x 52 x 111 x 171 x 671 x 891 = 111,508,100

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


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