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The GCF of 21 and 1539 is 3.
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Find HCF of: 42 & 3078 63 & 4617 7 & 513 105 & 7695 42 & 1539 21 & 3078 63 & 1539 21 & 4617 105 & 1539 21 & 7695 147 & 1539
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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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