Q: What are the prime factors of the number 125,388,108?

 A: 2, 3, 1161001

Why are those the prime factors of the number 125,388,108?

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 125,388,108

125,388,108
Factor Arrows
262,694,054
Factor Arrows
231,347,027
Factor Arrows
310,449,009
Factor Arrows
33,483,003
Factor Arrows
31,161,001

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, 1161001

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 3 x 1,161,001 = 125,388,108

This can also be written as 22 x 33 x 1,161,0011 = 125,388,108

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


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