Found with PFGW Version 3.6.0

22^21597+21 is 2-PRP! (10.2990s+0.0044s)
22^21597+21 is 3-PRP! (10.2588s+0.0021s)
22^21597+21 is 5-PRP! (10.2747s+0.0033s)
22^21597+21 is 7-PRP! (10.2144s+0.0037s)
22^21597+21 is 11-PRP! (10.3172s+0.0020s)

Primality testing 22^21597+21 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 2
Running N+1 test using discriminant 5, base 4+sqrt(5)
Calling N-1 BLS with factored part 0.03% and helper 0.02% (0.12% proof)
22^21597+21 is Fermat and Lucas PRP! (74.4944s+0.0035s)

To be completed...