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The GCF of 21 and 1683 is 3.
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Find HCF of: 42 & 3366 63 & 5049 7 & 561 105 & 8415 42 & 1683 21 & 3366 63 & 1683 21 & 5049 105 & 1683 21 & 8415 147 & 1683
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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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