Found with PFGW Version 3.6.0

1873^4482-4482^1873 is 2-PRP! (10.0048s+0.0028s)
1873^4482-4482^1873 is 3-PRP! (10.0084s+0.0039s)
1873^4482-4482^1873 is 5-PRP! (10.0192s+0.0019s)
1873^4482-4482^1873 is 7-PRP! (10.0171s+0.0021s)
1873^4482-4482^1873 is 11-PRP! (10.0372s+0.0020s)

Primality testing 1873^4482-4482^1873 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 5
Running N+1 test using discriminant 19, base 2+sqrt(19)
Calling N+1 BLS with factored part 0.08% and helper 0.02% (0.26% proof)
1873^4482-4482^1873 is Fermat and Lucas PRP! (46.9913s+0.0039s)

To be completed...