Found with PFGW Version 3.6.0

828^4609-4609^828 is 2-PRP! (9.1779s+0.0030s)
828^4609-4609^828 is 3-PRP! (9.0533s+0.0019s)
828^4609-4609^828 is 5-PRP! (9.0739s+0.0033s)
828^4609-4609^828 is 7-PRP! (9.0388s+0.0017s)
828^4609-4609^828 is 11-PRP! (9.0823s+0.0034s)

Primality testing 828^4609-4609^828 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 5
Running N+1 test using discriminant 11, base 3+sqrt(11)
Calling N-1 BLS with factored part 0.06% and helper 0.05% (0.22% proof)
828^4609-4609^828 is Fermat and Lucas PRP! (42.3482s+0.0017s)

To be completed...