No more for 2^n-57 up to n=198000.
PFGW Version 1.2.0 for Windows [FFT v23.8]
Primality testing 2^140078-57 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 3
Running N-1 test using base 5
Running N+1 test using discriminant 11, base 2+sqrt(11)
2^140078-57 is Fermat and Lucas PRP!
To be completed...