highest common factor
No, 8 is not a factor of 4.
Impossible to answer ! You need another number to compare it with - hence the phrase '...greatest common factor...'
Divisor is another word for factor. Common divisors are often called common factors, in fact the term GCD or greatest common divisor is the same as GCF which is greatest common factor.
In order to have a "greatest common factor" you need to have more than one number, so that 175 has factor in common with another number.
The greatest factor of 48 is 48 (1x48=48) There is no "common" factor unless you're comparing 48 with another number.
Since 2 is a factor of 8, it is automatically the GCF of the two.
Greatest Common Factor is GCF
It is known as their greatest common factor.
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There is no Greatest Common Factor (GCF) for a single number. The Greatest Common Factor is the largest factor common to two or more numbers.