The GCD of given numbers is 1.
factors of 17 are : | 1 , 17 |
factors of 34 are : | 1 , 2 , 17 , 34 |
factors of 56 are : | 1 , 2 , 4 , 7 , 8 , 14 , 28 , 56 |
factors of 60 are : | 1 , 2 , 3 , 4 , 5 , 6 , 10 , 12 , 15 , 20 , 30 , 60 |
factors of 61 are : | 1 , 61 |
factors of 9 are : | 1 , 3 , 9 |
We see that the Greatest Common Factor = 1.