The GCF is 1.
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The GCF is 13.
The GCF is 13.
The GCF is 1.
The GCF of 91, 156, and 169 is 13.It is: 13
The greatest common factor (GCF) refers to a factor that is COMMON to two or more numbers. You have only one number in the question! The greatest factor of any number is itself.