5
Prime factors for each number: 1000=2*2*2*5*5*5
55 = 5 *11
The overlap is a single 5, so that's the answer.
The GCF is 5.
The GCF of 55 and 105 is 5.
The GCF is 1
gcf of 55 and 121
The GCF is 11.
The GCF is 5.
The GCF is 5.
The GCF is 11.
The GCF is 11.
The GCF is.... 1 !
The gcf of 22 and 55 is :11
The GCF of 55 and 110155 is 5