The GCF of 57 and 512 is 1.
GCF(343, 512) = 1; the numbers are coprime.
GCF(51, 512) = 1. The numbers are coprime.
The GCF is 35.
The GCF of 128 and 512 is 128.
128 (128 times 4 gives 512)
The GCF is 7.
The GCF is 5.
35 and 70 have a GCF of 35.
The GCF of 35, 140 is 35.
The GCF of 42 and 35 is 7.factors of 42: 2,6,7factors of 35: 5,7
The GCF is 1.