Found with PFGW Version 3.7.5

75^54717+74 is 2-PRP! (59.2749s+0.0031s)
75^54717+74 is 3-PRP! (58.8260s+0.0033s)
75^54717+74 is 5-PRP! (58.7269s+0.0033s)
75^54717+74 is 7-PRP! (58.7403s+0.0034s)
75^54717+74 is 11-PRP! (58.7540s+0.0031s)

Primality testing 75^54717+74 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 2
Running N+1 test using discriminant 7, base 2+sqrt(7)
Calling N+1 BLS with factored part 0.02% and helper 0.02% (0.08% proof)
75^54717+74 is Fermat and Lucas PRP! (442.2004s+0.0044s)

To be completed...