Factor them.
3 x 3 x 3 x 7 = 189
2 x 5 x 13 x 19 = 2470
No common prime factors. The GCF is 1.
The GCF is 1.
Factors of 189: 1, 3, 7, 9, 21, 27, 63, 189 Factors of 2470: 1, 2, 5, 10, 13, 19, 26, 38, 65, 95, 130, 190, 247, 494, 1235, 2470 GCF (189, 2470) = 1
You need at least two numbers to find a GCF.
It is: 63
The GCF is 27.
The GCF is 63.
The GCF is 9.
The GCF is 27.
The GCF is 1.
The GCF of 27 and 189 is 27.
The GCF is 27.
You need at least two numbers to find a GCF.