Found with PFGW Version 3.6.0

3780^4051-4051^3780 is 2-PRP! (10.9661s+0.0020s)
3780^4051-4051^3780 is 3-PRP! (11.2257s+0.0008s)
3780^4051-4051^3780 is 5-PRP! (11.2677s+0.0007s)
3780^4051-4051^3780 is 7-PRP! (11.2775s+0.0007s)
3780^4051-4051^3780 is 11-PRP! (11.2512s+0.0010s)

Primality testing 3780^4051-4051^3780 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 19
Running N+1 test using discriminant 31, base 1+sqrt(31)
Calling N+1 BLS with factored part 0.06% and helper 0.03% (0.23% proof)
3780^4051-4051^3780 is Fermat and Lucas PRP! (50.3578s+0.0024s)

To be completed...