Solutions by everydaycalculation.com

The GCF of 4 and 19 is 1.

- Find the prime factorization of 4

4 = 2 × 2 - Find the prime factorization of 19

19 = 19 - To find the GCF, multiply all the prime factors common to both numbers:

Therefore, GCF = 1

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Find hcf of: 8 & 38 12 & 57 20 & 95 28 & 133 8 & 19 4 & 38 12 & 19 4 & 57 20 & 19 4 & 95 28 & 19 4 & 133

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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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