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Best Answer

51 = 1 x 3 x 17; 221 = 1 x 13 x 17. GCF is 1 x 17 = 17.

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Wiki User

14y ago

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Wiki User

7y ago

The GCF is 3.

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Wiki User

9y ago

The GCF is 17.

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Wiki User

14y ago

HCF(51, 111) = 3

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Wiki User

7y ago

It is: 3

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Q: What is the highest common factor of 57 111?
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