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The GCF of 21 and 1691 is 1.
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Find HCF of: 42 & 3382 63 & 5073 105 & 8455 42 & 1691 21 & 3382 63 & 1691 21 & 5073 105 & 1691 21 & 8455 147 & 1691
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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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