The GCF is 13.
It is 13
1, 3, 13, 39 1, 11, 13, 143 1, 13, 169
It is: 13
It is: 13
The GCF is 13.
The GCF is 13.
The GCF is 13.
1 and 13
It is: 13
It is 13
The GCF is 13.
Well, honey, the highest common factor (HCF) of 39, 143, and 169 is 13. There you have it, no need for any fancy footwork or beating around the bush. Just straight to the point like a boss.