Found with PFGW Version 3.8.0

461^13400-13400^461 is 2-PRP! (23.8390s+0.0051s)
461^13400-13400^461 is 3-PRP! (23.3160s+0.0042s)
461^13400-13400^461 is 5-PRP! (24.0083s+0.0048s)
461^13400-13400^461 is 7-PRP! (23.3125s+0.0112s)
461^13400-13400^461 is 11-PRP! (23.3445s+0.0046s)

Primality testing 461^13400-13400^461 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 3
Running N+1 test using discriminant 11, base 11+sqrt(11)
Calling N+1 BLS with factored part 0.04% and helper 0.01% (0.12% proof)
461^13400-13400^461 is Fermat and Lucas PRP! (117.7680s+0.0063s)

To be completed...