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The GCF of 21 and 317 is 1.
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Find HCF of: 42 & 634 63 & 951 105 & 1585 147 & 2219 42 & 317 21 & 634 63 & 317 21 & 951 105 & 317 21 & 1585 147 & 317 21 & 2219
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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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