Solutions by everydaycalculation.com

The GCF of 27 and 7 is 1.

- Find the prime factorization of 27

27 = 3 × 3 × 3 - Find the prime factorization of 7

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

Therefore, GCF = 1

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Find hcf of: 54 & 14 81 & 21 135 & 35 189 & 49 54 & 7 27 & 14 81 & 7 27 & 21 135 & 7 27 & 35 189 & 7 27 & 49

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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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