Found with PFGW Version 3.7.5

8448^9323-9323^8448 is 2-PRP! (23.5589s+0.0015s)
8448^9323-9323^8448 is 3-PRP! (23.5411s+0.0016s)
8448^9323-9323^8448 is 5-PRP! (23.5384s+0.0016s)
8448^9323-9323^8448 is 7-PRP! (23.5416s+0.0016s)
8448^9323-9323^8448 is 11-PRP! (23.5762s+0.0016s)

Primality testing 8448^9323-9323^8448 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 13
Running N+1 test using discriminant 19, base 1+sqrt(19)
Calling N+1 BLS with factored part 0.02% and helper 0.00% (0.06% proof)
8448^9323-9323^8448 is Fermat and Lucas PRP! (117.7417s+0.0026s)

To be completed...