Using Euclid's algorithm, it's the same as the gcf of 105 and 55 (where 55 is the remainder of the division of 160 by 105).
The GCF is 5.
The greatest common factor of 165 and 345 is 15.
The GCF is 105
840 and 945 have a GCF of 105. 945 and 1050 have a GCF of 105.
The greatest common factor (GCF) of 105 and 210 is 105.
The GCF is 1.
The GCF is 105.
The GCF is 105.
The GCF is 105.
The GCF is 105.
The GCF is 15.