Found with PFGW Version 3.6.0

85^8698+84 is 2-PRP! (4.9513s+0.0022s)
85^8698+84 is 3-PRP! (4.9112s+0.0019s)
85^8698+84 is 5-PRP! (4.8914s+0.0022s)
85^8698+84 is 7-PRP! (4.9190s+0.0022s)
85^8698+84 is 11-PRP! (4.8982s+0.0032s)

Primality testing 85^8698+84 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 2
Running N-1 test using base 19
Running N+1 test using discriminant 29, base 21+sqrt(29)
Calling N+1 BLS with factored part 0.20% and helper 0.08% (0.68% proof)
85^8698+84 is Fermat and Lucas PRP! (37.3084s+0.0018s)

To be completed...