Q: What are the prime factors of the number 138,192?

 A: 2, 3, 2879

Why are those the prime factors of the number 138,192?

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 138,192

138,192
Factor Arrows
269,096
Factor Arrows
234,548
Factor Arrows
217,274
Factor Arrows
28,637
Factor Arrows
32,879

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, 2879

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 2,879 = 138,192

This can also be written as 24 x 31 x 2,8791 = 138,192

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


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