ound with PFGW Version 3.7.5

1397^10866-10866^1397 is 2-PRP! (22.5423s+0.0014s)
1397^10866-10866^1397 is 3-PRP! (22.2425s+0.0013s)
1397^10866-10866^1397 is 5-PRP! (22.0186s+0.0015s)
1397^10866-10866^1397 is 7-PRP! (21.9985s+0.0015s)
1397^10866-10866^1397 is 11-PRP! (22.2965s+0.0015s)

Primality testing 1397^10866-10866^1397 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 5
Running N-1 test using base 11
Running N-1 test using base 13
Running N-1 test using base 19
Running N+1 test using discriminant 29, base 3+sqrt(29)
Calling N-1 BLS with factored part 0.03% and helper 0.00% (0.08% proof)
1397^10866-10866^1397 is Fermat and Lucas PRP! (177.2834s+0.0022s)

To be completed...