Q: What are the prime factors of the number 138,112?

 A: 2, 13, 83

Why are those the prime factors of the number 138,112?

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 138,112

138,112
Factor Arrows
269,056
Factor Arrows
234,528
Factor Arrows
217,264
Factor Arrows
28,632
Factor Arrows
24,316
Factor Arrows
22,158
Factor Arrows
21,079
Factor Arrows
1383

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, 13, 83

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 2 x 13 x 83 = 138,112

This can also be written as 27 x 131 x 831 = 138,112

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


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