Found with PFGW Version 3.7.5

433^8970-8970^433 is 2-PRP! (10.5679s+0.0012s)
433^8970-8970^433 is 3-PRP! (9.7295s+0.0012s)
433^8970-8970^433 is 5-PRP! (9.7295s+0.0012s)
433^8970-8970^433 is 7-PRP! (9.7144s+0.0010s)
433^8970-8970^433 is 11-PRP! (9.7967s+0.0010s)

Primality testing 433^8970-8970^433 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 7
Running N+1 test using discriminant 31, base 3+sqrt(31)
Calling N-1 BLS with factored part 0.05% and helper 0.03% (0.20% proof)
433^8970-8970^433 is Fermat and Lucas PRP! (49.3575s+0.0023s)

To be completed...