common to what other number(s)?
The Highest Common Factor is: 9
The highest common factor of 81 and 27 is 27
The greatest common factor of 81 and 135 is 27.
Since 27 is a factor of 54, it is automatically the GCF.
nine
It is 9
It is: 9
It is 3
The common factors of 36 and 27 are 1, 3 & 9; the highest common factor is 9.
The highest common factor is 3
If you mean: 27 36 72 then the highest common factor is 9
The Greatest Common Factor (GCF) is: 9