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 greatest common factor of 4 and 99 is 1.
The greatest common factor of 99 and 90 is 9.
The Greatest Common Factor (GCF) of 99 and 144 is 9
The GCF of 75 and 99 is 3.
3 is the greatest common factor of 69 and 99.
The Greatest Common Factor of 99, 132, 165: 33
The greatest common factor of 99, 78, and 12 is 3.
The greatest common factor for 30 and 99 is 3.
The greatest common factor of 55 and 99 is 11.The GCF of 55 and 99 is 11.
The greatest common factor of 99 and 25 is 1. There are not other numbers that are common between them.
The Greatest Common Factor (GCF) is: 9