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The GCF of 81 and 639 is 9.
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Find HCF of: 162 & 1278 243 & 1917 27 & 213 405 & 3195 567 & 4473 162 & 639 81 & 1278 243 & 639 81 & 1917 405 & 639 81 & 3195 567 & 639 81 & 4473
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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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