Solutions by everydaycalculation.com

The GCF of 189 and 18 is 9.

- Find the prime factorization of 189

189 = 3 × 3 × 3 × 7 - Find the prime factorization of 18

18 = 2 × 3 × 3 - To find the GCF, multiply all the prime factors common to both numbers:

Therefore, GCF = 3 × 3 - GCF =
**9**

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Find hcf of: 378 & 36 567 & 54 63 & 6 945 & 90 1323 & 126 378 & 18 189 & 36 567 & 18 189 & 54 945 & 18 189 & 90 1323 & 18 189 & 126

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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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