Q: What are the prime factors of the number 107,808?

 A: 2, 3, 1123

Why are those the prime factors of the number 107,808?

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 107,808

107,808
Factor Arrows
253,904
Factor Arrows
226,952
Factor Arrows
213,476
Factor Arrows
26,738
Factor Arrows
23,369
Factor Arrows
31,123

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, 1123

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 1,123 = 107,808

This can also be written as 25 x 31 x 1,1231 = 107,808

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


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