Q: What are the prime factors of the number 339,966?

 A: 2, 3, 11, 17, 101

Why are those the prime factors of the number 339,966?

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 339,966

339,966
Factor Arrows
2169,983
Factor Arrows
356,661
Factor Arrows
318,887
Factor Arrows
111,717
Factor Arrows
17101

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, 101

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 11 x 17 x 101 = 339,966

This can also be written as 21 x 32 x 111 x 171 x 1011 = 339,966

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


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