Q: What are the prime factors of the number 108,121,875?

 A: 3, 5, 19, 607

Why are those the prime factors of the number 108,121,875?

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 108,121,875

108,121,875
Factor Arrows
336,040,625
Factor Arrows
57,208,125
Factor Arrows
51,441,625
Factor Arrows
5288,325
Factor Arrows
557,665
Factor Arrows
511,533
Factor Arrows
19607

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:

3, 5, 19, 607

We can check our work by multiplying all of the prime factors together: 3 x 5 x 5 x 5 x 5 x 5 x 19 x 607 = 108,121,875

This can also be written as 31 x 55 x 191 x 6071 = 108,121,875

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


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