ound with PFGW Version 3.7.5

3855^8048-8048^3855 is 2-PRP! (31.6832s+0.0053s)
3855^8048-8048^3855 is 3-PRP! (34.3608s+0.0044s)
3855^8048-8048^3855 is 5-PRP! (29.4527s+0.0024s)
3855^8048-8048^3855 is 7-PRP! (35.3449s+0.0040s)
3855^8048-8048^3855 is 11-PRP! (26.8112s+0.0020s)

Primality testing 3855^8048-8048^3855 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 5
Running N-1 test using base 7
Running N+1 test using discriminant 13, base 10+sqrt(13)
Calling N+1 BLS with factored part 0.01% and helper 0.01% (0.05% proof)
3855^8048-8048^3855 is Fermat and Lucas PRP! (221.1950s+0.0052s)

To be completed...