Found with PFGW Version 3.6.0

42^27291-41 is 2-PRP! (25.2784s+0.0042s)
42^27291-41 is 3-PRP! (25.2057s+0.0031s)
42^27291-41 is 5-PRP! (25.1821s+0.0031s)
42^27291-41 is 7-PRP! (25.0989s+0.0031s)
42^27291-41 is 11-PRP! (25.0988s+0.0044s)

Primality testing 42^27291-41 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 3
Running N+1 test using discriminant 7, base 10+sqrt(7)
Calling N-1 BLS with factored part 0.06% and helper 0.01% (0.20% proof)
42^27291-41 is Fermat and Lucas PRP! (185.8426s+0.0027s)

To be completed...