PFGW Fermat Prp b=2,5,11 and BLS test :

PFGW Version 20030425.Win_Dev (Alpha caveat utilitor) [FFT v22.13 w/P4]

Primality testing 2^481801-481801 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 3
Running N-1 test using base 7
Running N+1 test using discriminant 13, base 2+sqrt(13)
2^481801-481801 is Fermat and Lucas PRP! (15382.4768s+0.0020s)

To be completed...