Found with PFGW Version 3.7.5

8602^12451+12451^8602 is 2-PRP! (105.8107s+0.0066s)
8602^12451+12451^8602 is 3-PRP! (105.3774s+0.0065s)
8602^12451+12451^8602 is 5-PRP! (104.9506s+0.0073s)
8602^12451+12451^8602 is 7-PRP! (104.4496s+0.0068s)
8602^12451+12451^8602 is 11-PRP! (97.5269s+0.0063s)

Primality testing 8602^12451+12451^8602 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 3
Running N+1 test using discriminant 41, base 12+sqrt(41)
Calling N-1 BLS with factored part 0.02% and helper 0.01% (0.07% proof)
8602^12451+12451^8602 is Fermat and Lucas PRP! (504.9749s+0.0070s)

To be completed...