It is not possible to give a sensible answer to this question. The highest common factor (HCF) refers to a factor that is COMMON to two or more numbers. You have only one number in the question!
The GCF of 75 and 99 is 3.
3 is the greatest common factor of 69 and 99.
3 is the greatest common factor of 42 and 99.
The GCF is 3.
The GCF is 3.
The greatest common factor for 30 and 99 is 3.
3 is the greatest common factor of 69 and 99.
The GCF of 75 and 99 is 3.
The greatest common factor of 99, 78, and 12 is 3.
3 is the greatest common factor of 42 and 99.
3
The GCF of 3, 48, and 99 is 3
The GCF of 93 and 99 is 3.
The GCF of 99 and 159 is 3.
The GCF is 3.
The greatest common factor of 21 and 99 is 3. 21's factors are 1,3,and 7 99's factors are 1,3,9,11 33 (there may be more factors of 99). The highest factor that both number have in common are 3.
The GCF is 3.