Found with PFGW Version 3.6.0

633^10108-10108^633 is 2-PRP! (37.9674s+0.0030s)
633^10108-10108^633 is 3-PRP! (38.0097s+0.0027s)
633^10108-10108^633 is 5-PRP! (37.8999s+0.0023s)
633^10108-10108^633 is 7-PRP! (37.8797s+0.0028s)
633^10108-10108^633 is 11-PRP! (38.0973s+0.0023s)

Primality testing 633^10108-10108^633 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 3
Running N+1 test using discriminant 17, base 10+sqrt(17)
Calling N+1 BLS with factored part 0.07% and helper 0.02% (0.24% proof)
633^10108-10108^633 is Fermat and Lucas PRP! (181.2044s+0.0023s)

To be completed...