9
You need at least two numbers to find a GCF.
The GCF is 19.
The GCF is 15.
The GCF is 5.
The GCF is 1.
The GCF is 15.
The GCF is 27.
The GCF is 27.
The greatest common factor (GCF) of 120 and 135 is 15.
The GCF of 30 & 135 is 15.
The GCF of 27, 135 is 27.
The GCF is 19.