Found with PFGW Version 3.6.0

859^6632-6632^859 is 2-PRP! (15.9505s+0.0055s)
859^6632-6632^859 is 3-PRP! (15.9020s+0.0036s)
859^6632-6632^859 is 5-PRP! (15.9721s+0.0050s)
859^6632-6632^859 is 7-PRP! (15.9814s+0.0059s)
859^6632-6632^859 is 11-PRP! (15.9653s+0.0055s)

Primality testing 859^6632-6632^859 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 3
Running N+1 test using discriminant 11, base 1+sqrt(11)
Calling N-1 BLS with factored part 0.05% and helper 0.02% (0.18% proof)
859^6632-6632^859 is Fermat and Lucas PRP! (89.2563s+0.0049s)

To be completed...