1 because 7 and 31 are prime factors
The GCF is 31.
The GCF is 1.
The GCF is 31.
The GCF is 1.
The GCF is 1.
The GCF is 1.
The GCF is 1.
7 (7 x 19, 7 x 31)
The GCF of 31 and 6 is 1.
The GCF is 31.
1 is the GCF of 33 and 31 because 31 is a prime number.
You need at least two numbers to find a GCF. If that's 3 and 7, the GCF is 1.