Q: What are the prime factors of the number 338,992?

 A: 2, 21187

Why are those the prime factors of the number 338,992?

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 338,992

338,992
Factor Arrows
2169,496
Factor Arrows
284,748
Factor Arrows
242,374
Factor Arrows
221,187

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, 21187

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 21,187 = 338,992

This can also be written as 24 x 21,1871 = 338,992

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


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