Q: What are the prime factors of the number 127,168?

 A: 2, 1987

Why are those the prime factors of the number 127,168?

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 127,168

127,168
Factor Arrows
263,584
Factor Arrows
231,792
Factor Arrows
215,896
Factor Arrows
27,948
Factor Arrows
23,974
Factor Arrows
21,987

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, 1987

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 1,987 = 127,168

This can also be written as 26 x 1,9871 = 127,168

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


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