Lucas number
PFGW BLS test :

PFGW Version 20040817.Win_Dev (Beta caveat utilitor) [FFT v23.8]
Primality testing L(692147) [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 3
Running N+1 test using discriminant 7, base 9+sqrt(7)
L(692147) is Fermat and Lucas PRP! (27420.6953s+0.1301s)

To be completed...