Found with PFGW Version 3.7.5

1778^9435-9435^1778 is 2-PRP! (28.8913s+0.0020s)
1778^9435-9435^1778 is 3-PRP! (27.1441s+0.0019s)
1778^9435-9435^1778 is 5-PRP! (27.3965s+0.0020s)
1778^9435-9435^1778 is 7-PRP! (30.2776s+0.0019s)
1778^9435-9435^1778 is 11-PRP! (31.6911s+0.0017s)

Primality testing 1778^9435-9435^1778 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 5
Running N+1 test using discriminant 11, base 2+sqrt(11)
Calling N+1 BLS with factored part 0.03% and helper 0.02% (0.10% proof)
1778^9435-9435^1778 is Fermat and Lucas PRP! (140.2357s+0.0045s)

To be completed...