The GCF is 6.
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3
The prime factors are: 12 = 2 * 2 *3 21 = 3 *7 30 = 2 * 3 * 5 So the greatest common factor is 3.
The greatest common factor (GCF) is: 2
The GCF is 3.
The greatest common factor of the numbers 14 and 30 is 2.