Found with PFGW Version 3.7.5

2617^9966-9966^2617 is 2-PRP! (22.0387s+0.0014s)
2617^9966-9966^2617 is 3-PRP! (22.1604s+0.0158s)
2617^9966-9966^2617 is 5-PRP! (22.1712s+0.0012s)
2617^9966-9966^2617 is 7-PRP! (22.2303s+0.0013s)
2617^9966-9966^2617 is 11-PRP! (22.2292s+0.0013s)

Primality testing 2617^9966-9966^2617 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 5
Running N+1 test using discriminant 13, base 6+sqrt(13)
Calling N-1 BLS with factored part 0.02% and helper 0.01% (0.06% proof)
2617^9966-9966^2617 is Fermat and Lucas PRP! (109.4343s+0.0023s)

To be completed...