Found with PFGW Version 3.7.5

6452^9927-9927^6452 is 2-PRP! (26.0479s+0.0016s)
6452^9927-9927^6452 is 3-PRP! (25.9059s+0.0017s)
6452^9927-9927^6452 is 5-PRP! (26.1216s+0.0015s)
6452^9927-9927^6452 is 7-PRP! (26.1471s+0.0016s)
6452^9927-9927^6452 is 11-PRP! (26.2418s+0.0016s)

Primality testing 6452^9927-9927^6452 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 5
Running N+1 test using discriminant 11, base 2+sqrt(11)
Calling N-1 BLS with factored part 0.03% and helper 0.01% (0.09% proof)
6452^9927-9927^6452 is Fermat and Lucas PRP! (149.5246s+0.0023s)

To be completed...