Found with PFGW Version 3.6.0

12^26199-11 is 2-PRP! (8.2206s+0.0030s)
12^26199-11 is 3-PRP! (8.2277s+0.0042s)
12^26199-11 is 5-PRP! (8.0760s+0.0018s)
12^26199-11 is 7-PRP! (8.2733s+0.0018s)
12^26199-11 is 11-PRP! (8.1965s+0.0038s)

Primality testing 12^26199-11 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 2
Running N+1 test using discriminant 5, base 5+sqrt(5)
Calling N+1 BLS with factored part 0.06% and helper 0.03% (0.22% proof)
12^26199-11 is Fermat and Lucas PRP! (66.8708s+0.0166s)

To be completed...