The GCF is 1.
The GCF of 5, 11 and 25 is 1. The GCF of 7, 23 and 52 is 1.
It is: 1
The GCF is 23.
The GCF is 2^3 x 5.
The GCF is 23.
The GCF of each of those is 1.
The GCF is 25.
The GCF is 23.
GCF of 140 and 25 is 5.
The GCF is 1.
The GCF is 23.
The GCF is 1.