Found with PFGW Version 3.7.5

50^31847-49 is 2-PRP! (24.5802s+0.0036s)
50^31847-49 is 3-PRP! (24.6094s+0.0039s)
50^31847-49 is 5-PRP! (24.5219s+0.0037s)
50^31847-49 is 7-PRP! (24.9871s+0.0034s)
50^31847-49 is 11-PRP! (25.0927s+0.0039s)

Primality testing 50^31847-49 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 3
Running N-1 test using base 7
Running N+1 test using discriminant 19, base 1+sqrt(19)
Calling N-1 BLS with factored part 0.03% and helper 0.02% (0.10% proof)
50^31847-49 is Fermat and Lucas PRP! (225.6070s+0.0045s)

To be completed...