The GCF is 1.
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The greatest common factor (GCF) is often also called the greatest common divisor (GCD) or highest common factor (HCF). Keep in mind that these different terms all refer to the same thing: the largest integer which evenly divides two or more numbers.The greatest common factor of 28 and 46 is 2
Since both 23 and 47 are prime numbers, their greatest common factor is 1.
The GCF is 1.
The GCF is 1.
47 is a prime number so the great common factor of 47 and any other number can only ever be 1.