The factors of 25 are: 1, 5, 25
The factors of 34 are: 1, 2, 17, 34
The common factors are: 1
The GCF is 1.
The GCF is 34.
The GCF is 17.
The GCF is 2.
The GCF is 1.
The GCF is 2.
The GCF is 2.
The GCF is 1.
The GCF is 2.
The GCF of 27 and 34 is 1.
GCF of 22 and 34 is 2.
Since 17 is a factor of 34, it is automatically the GCF.