Found with PFGW Version 3.7.5

91^42063+90 is 2-PRP! (48.0544s+0.0036s)
91^42063+90 is 3-PRP! (47.6272s+0.0034s)
91^42063+90 is 5-PRP! (47.1226s+0.0034s)
91^42063+90 is 7-PRP! (47.1406s+0.0034s)
91^42063+90 is 11-PRP! (47.1266s+0.0033s)

Primality testing 91^42063+90 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 2
Running N-1 test using base 7
Running N-1 test using base 11
Running N+1 test using discriminant 19, base 1+sqrt(19)
Calling N+1 BLS with factored part 0.01% and helper 0.00% (0.02% proof)
91^42063+90 is Fermat and Lucas PRP! (436.4386s+0.0033s)

To be completed...