Found with PFGW Version 3.7.5

1706^8145-8145^1706 is 2-PRP! (20.1009s+0.0017s)
1706^8145-8145^1706 is 3-PRP! (23.4462s+0.0020s)
1706^8145-8145^1706 is 5-PRP! (18.6527s+0.0016s)
1706^8145-8145^1706 is 7-PRP! (19.3681s+0.0017s)
1706^8145-8145^1706 is 11-PRP! (23.9574s+0.0019s)

Primality testing 1706^8145-8145^1706 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 7
Running N+1 test using discriminant 23, base 1+sqrt(23)
Calling N+1 BLS with factored part 0.05% and helper 0.04% (0.19% proof)
1706^8145-8145^1706 is Fermat and Lucas PRP! (142.1916s+0.0054s)

To be completed...