Found with PFGW Version 3.7.5

1280^5453-5453^1280 is 2-PRP! (9.1103s+0.0254s)
1280^5453-5453^1280 is 3-PRP! (9.7631s+0.0002s)
1280^5453-5453^1280 is 5-PRP! (10.6862s+0.0004s)
1280^5453-5453^1280 is 7-PRP! (10.5087s+0.0003s)
1280^5453-5453^1280 is 11-PRP! (11.0733s+0.0002s)

Primality testing 1280^5453-5453^1280 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 3
Running N+1 test using discriminant 19, base 1+sqrt(19)
Calling N-1 BLS with factored part 0.06% and helper 0.04% (0.21% proof)
1280^5453-5453^1280 is Fermat and Lucas PRP! (55.7233s+0.0029s)

To be completed...