Found with PFGW Version 3.7.5

1227^9520-9520^1227 is 2-PRP! (15.3858s+0.0011s)
1227^9520-9520^1227 is 3-PRP! (15.4023s+0.0013s)
1227^9520-9520^1227 is 5-PRP! (15.4035s+0.0011s)
1227^9520-9520^1227 is 7-PRP! (15.3935s+0.0011s)
1227^9520-9520^1227 is 11-PRP! (15.4484s+0.0011s)

Primality testing 1227^9520-9520^1227 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 3
Running N+1 test using discriminant 13, base 1+sqrt(13)
Calling N-1 BLS with factored part 0.02% and helper 0.02% (0.08% proof)
1227^9520-9520^1227 is Fermat and Lucas PRP! (77.2048s+0.0020s)

To be completed...