Q: What are the prime factors of the number 119,872?

 A: 2, 1873

Why are those the prime factors of the number 119,872?

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 119,872

119,872
Factor Arrows
259,936
Factor Arrows
229,968
Factor Arrows
214,984
Factor Arrows
27,492
Factor Arrows
23,746
Factor Arrows
21,873

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, 1873

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 1,873 = 119,872

This can also be written as 26 x 1,8731 = 119,872

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


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