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The GCF of 21 and 2019 is 3.
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Find HCF of: 42 & 4038 63 & 6057 7 & 673 42 & 2019 21 & 4038 63 & 2019 21 & 6057 105 & 2019 147 & 2019
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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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