Found with PFGW Version 3.4.8

50^11951-49 is 2-PRP! (12.1400s+0.0045s)
50^11951-49 is 3-PRP! (16.0717s+0.0050s)
50^11951-49 is 5-PRP! (23.7434s+0.0122s)
50^11951-49 is 7-PRP! (26.4432s+0.0094s)
50^11951-49 is 11-PRP! (33.4035s+0.0115s)

Primality testing 50^11951-49 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 3
Running N+1 test using discriminant 7, base 9+sqrt(7)
Calling N-1 BLS with factored part 0.26% and helper 0.02% (0.79% proof)
50^11951-49 is Fermat and Lucas PRP! (200.4703s+0.0166s)

To be completed...