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# What is the greatest common factor of 18 39 and 45?

Updated: 10/19/2022

Wiki User

7y ago

The answer to this problem is simple, the Greatest Common Factor (GCF) is 27.

Wiki User

14y ago

Wiki User

7y ago

The greatest common factor of 18, 39, and 45 is 3. The only non-trivial prime factors of 39 are 13 and 3. 13 is not a factor of the other numbers stated, but 3 is.
The GCF is 3.

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