Found with PFGW Version 3.6.0

75^17465-74 is 2-PRP! (15.8892s+0.0026s)
75^17465-74 is 3-PRP! (15.7128s+0.0027s)
75^17465-74 is 5-PRP! (15.8369s+0.0026s)
75^17465-74 is 7-PRP! (15.8672s+0.0038s)
75^17465-74 is 11-PRP! (15.7940s+0.0039s)

Primality testing 75^17465-74 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 7
Running N+1 test using discriminant 13, base 13+sqrt(13)
Calling N-1 BLS with factored part 0.18% and helper 0.05% (0.59% proof)
75^17465-74 is Fermat and Lucas PRP! (115.9112s+0.0034s)

To be completed...