The GCF is 1
The GCF is 1.
If you mean 66, 12, 11 and 43 then the highest common factor is 1 because 11 and 43 are prime numbers.
The GCF is 1.
The GCF is 1.
The GCF is 1.
The GCF is 1.
The GCF is 1.
The GCF is 1.
1 is the GCF for 17 and 43.
The GCF of 43 and 18 is 1.
The GCF of 43 and 14 is 1
The GCF of 43 90 is 1.