Q: What are the prime factors of the number 168,816?

 A: 2, 3, 3517

Why are those the prime factors of the number 168,816?

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 168,816

168,816
Factor Arrows
284,408
Factor Arrows
242,204
Factor Arrows
221,102
Factor Arrows
210,551
Factor Arrows
33,517

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, 3517

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 3,517 = 168,816

This can also be written as 24 x 31 x 3,5171 = 168,816

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


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