Found with PFGW Version 3.7.5

294^8459-8459^294 is 2-PRP! (8.3943s+0.0008s)
294^8459-8459^294 is 3-PRP! (8.3702s+0.0010s)
294^8459-8459^294 is 5-PRP! (8.5813s+0.0009s)
294^8459-8459^294 is 7-PRP! (8.4297s+0.0009s)
294^8459-8459^294 is 11-PRP! (8.3958s+0.0009s)

Primality testing 294^8459-8459^294 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 5
Running N+1 test using discriminant 19, base 1+sqrt(19)
Calling N+1 BLS with factored part 0.06% and helper 0.00% (0.18% proof)
294^8459-8459^294 is Fermat and Lucas PRP! (41.5971s+0.0023s)

To be completed...