Found with PFGW Version 3.4.8

51^7429-50 is 2-PRP! (5.5488s+0.0044s)
51^7429-50 is 3-PRP! (6.2491s+0.0046s)
51^7429-50 is 5-PRP! (7.5624s+0.0045s)
51^7429-50 is 7-PRP! (7.9542s+0.0051s)
51^7429-50 is 11-PRP! (9.0126s+0.0049s)

Primality testing 51^7429-50 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 11
Running N-1 test using base 19
Running N+1 test using discriminant 29, base 10+sqrt(29)
Calling N-1 BLS with factored part 0.33% and helper 0.04% (1.04% proof)
51^7429-50 is Fermat and Lucas PRP! (82.4234s+0.0087s)

To be completed...