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# What is the greatest common factor of 16 and 81?

Updated: 4/28/2022

Wiki User

8y ago

The GCF of 16 and 81 is 1.

16's prime factors are 2, 2, 2 and 2

81's prime factors are 3, 3, 3 and 3

Therefore, they do not have any common prime factors, and so the greatest common factor is 1.

Wiki User

8y ago

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Q: What is the greatest common factor of 16 and 81?
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