Q: What are the prime factors of the number 109,188?

 A: 2, 3, 337

Why are those the prime factors of the number 109,188?

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 109,188

109,188
Factor Arrows
254,594
Factor Arrows
227,297
Factor Arrows
39,099
Factor Arrows
33,033
Factor Arrows
31,011
Factor Arrows
3337

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, 337

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 3 x 3 x 337 = 109,188

This can also be written as 22 x 34 x 3371 = 109,188

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


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