Since 13 is a factor of 78, it is automatically the GCF.
The GCF is 13.The GCF is 13.
GCF(39, 78, 26) = 13.
The GCF is 13.
The GCF is 13.
The GCF is 13.
The GCF is 13.
The GCF is 13.
The GCF is 13.
The GCF is 13.
The factors of 78 are: 1, 2, 3, 6, 13, 26, 39, 78 The factors of 91 are: 1, 7, 13, 91 The factors of 156 are: 1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156 The common factors are: 1, 13 The Greatest Common Factor: GCF = 13
13
13