Q: What are the prime factors of the number 189,816?

 A: 2, 3, 11, 719

Why are those the prime factors of the number 189,816?

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 189,816

189,816
Factor Arrows
294,908
Factor Arrows
247,454
Factor Arrows
223,727
Factor Arrows
37,909
Factor Arrows
11719

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, 719

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 11 x 719 = 189,816

This can also be written as 23 x 31 x 111 x 7191 = 189,816

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


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