Q: What are the prime factors of the number 126,689,112?

 A: 2, 3, 11, 19, 8419

Why are those the prime factors of the number 126,689,112?

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 126,689,112

126,689,112
Factor Arrows
263,344,556
Factor Arrows
231,672,278
Factor Arrows
215,836,139
Factor Arrows
35,278,713
Factor Arrows
31,759,571
Factor Arrows
11159,961
Factor Arrows
198,419

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, 11, 19, 8419

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 11 x 19 x 8,419 = 126,689,112

This can also be written as 23 x 32 x 111 x 191 x 8,4191 = 126,689,112

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


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