Q: What are the prime factors of the number 136,768?

 A: 2, 2137

Why are those the prime factors of the number 136,768?

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 136,768

136,768
Factor Arrows
268,384
Factor Arrows
234,192
Factor Arrows
217,096
Factor Arrows
28,548
Factor Arrows
24,274
Factor Arrows
22,137

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, 2137

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 2,137 = 136,768

This can also be written as 26 x 2,1371 = 136,768

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


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