Solutions by everydaycalculation.com

The GCF of 129 and 126 is 3.

- Find the prime factorization of 129

129 = 3 × 43 - Find the prime factorization of 126

126 = 2 × 3 × 3 × 7 - To find the GCF, multiply all the prime factors common to both numbers:

Therefore, GCF = 3

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Find hcf of: 258 & 252 387 & 378 43 & 42 645 & 630 903 & 882 258 & 126 129 & 252 387 & 126 129 & 378 645 & 126 129 & 630 903 & 126 129 & 882

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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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