Found with PFGW Version 3.7.5

120^9877-119 is 2-PRP! (5.0500s+0.0017s)
120^9877-119 is 3-PRP! (5.8817s+0.0027s)
120^9877-119 is 5-PRP! (7.6374s+0.0034s)
120^9877-119 is 7-PRP! (6.5412s+0.0020s)
120^9877-119 is 11-PRP! (5.8710s+0.0020s)

Primality testing 120^9877-119 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 19
Running N+1 test using discriminant 41, base 8+sqrt(41)
Calling N-1 BLS with factored part 0.20% and helper 0.01% (0.62% proof)
120^9877-119 is Fermat and Lucas PRP! (40.3821s+0.0043s)

To be completed...