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The GCF of 21 and 1000 is 1.
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Find HCF of: 42 & 2000 63 & 3000 105 & 5000 147 & 7000 42 & 1000 21 & 2000 63 & 1000 21 & 3000 105 & 1000 21 & 5000 147 & 1000 21 & 7000
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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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