Q: What are the prime factors of the number 204,123,321?

 A: 3, 23, 109567

Why are those the prime factors of the number 204,123,321?

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 204,123,321

204,123,321
Factor Arrows
368,041,107
Factor Arrows
322,680,369
Factor Arrows
37,560,123
Factor Arrows
32,520,041
Factor Arrows
23109,567

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:

3, 23, 109567

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 3 x 23 x 109,567 = 204,123,321

This can also be written as 34 x 231 x 109,5671 = 204,123,321

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


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