The greatest common factor of 30 and 198 is 6.
30: 1, 2, 3, 5, 6, 10, 15, 30
198: 1, 2, 3, 6, 9, 11, 18, 22, 33, 66, 99,198
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The greatest common factor of 30 and 39 is 3.
The greatest common factor of 30 , 50 = 10
greatest common factor of 110 and 30 is 10.
The greatest common factor of 16 and 30 is 2
The greatest common factor (GCF) is: 5.