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The GCF of 21 and 2551 is 1.
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Find HCF of: 42 & 5102 63 & 7653 42 & 2551 21 & 5102 63 & 2551 21 & 7653 105 & 2551 147 & 2551
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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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