Q: What are the prime factors of the number 107,712?

 A: 2, 3, 11, 17

Why are those the prime factors of the number 107,712?

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 107,712

107,712
Factor Arrows
253,856
Factor Arrows
226,928
Factor Arrows
213,464
Factor Arrows
26,732
Factor Arrows
23,366
Factor Arrows
21,683
Factor Arrows
3561
Factor Arrows
3187
Factor Arrows
1117

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, 11, 17

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 3 x 3 x 11 x 17 = 107,712

This can also be written as 26 x 32 x 111 x 171 = 107,712

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


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