Found with PFGW Version 3.6.0

90^8626-89 is 2-PRP! (4.1401s+0.0021s)
90^8626-89 is 3-PRP! (4.1185s+0.0022s)
90^8626-89 is 5-PRP! (4.1371s+0.0035s)
90^8626-89 is 7-PRP! (4.1244s+0.0019s)
90^8626-89 is 11-PRP! (4.1441s+0.0017s)

Primality testing 90^8626-89 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 3
Running N+1 test using discriminant 19, base 1+sqrt(19)
Calling N-1 BLS with factored part 0.54% and helper 0.01% (1.63% proof)
90^8626-89 is Fermat and Lucas PRP! (28.2092s+0.0017s)

To be completed...