Found with PFGW Version 3.7.5

2208^7451-7451^2208 is 2-PRP! (16.1288s+0.0006s)
2208^7451-7451^2208 is 3-PRP! (16.1966s+0.0006s)
2208^7451-7451^2208 is 5-PRP! (16.0931s+0.0005s)
2208^7451-7451^2208 is 7-PRP! (16.1020s+0.0005s)
2208^7451-7451^2208 is 11-PRP! (16.1346s+0.0006s)

Primality testing 2208^7451-7451^2208 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 7
Running N-1 test using base 13
Running N+1 test using discriminant 29, base 2+sqrt(29)
Calling N+1 BLS with factored part 0.06% and helper 0.00% (0.18% proof)
2208^7451-7451^2208 is Fermat and Lucas PRP! (102.0369s+0.0031s)

To be completed...