Q: What are the prime factors of the number 204?

 A: 2, 3, 17

Why are those the prime factors of the number 204?

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

204
Factor Arrows
2102
Factor Arrows
251
Factor Arrows
317

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, 17

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 17 = 204

This can also be written as 22 x 31 x 171 = 204

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


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