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The GCF of 18 and 660 is 6.
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Find HCF of: 36 & 1320 9 & 330 54 & 1980 6 & 220 90 & 3300 126 & 4620 36 & 660 18 & 1320 54 & 660 18 & 1980 90 & 660 18 & 3300 126 & 660 18 & 4620
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The greatest common factor (GCF) is also known as greatest common divisor (GCD) or highest common factor (HCF).
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