Another near-rep-unit, a.k.a. Plateau-and-Depression: 166...661
(searched out of sequence)

(5*10^66394-17)/3 is 3-PRP! (217.2589s+0.0029s)
(5*10^66394-17)/3 is 23-PRP! (286.7449s+0.0033s)

Re-confirmation with -tc:
PFGW Version 1.2.0 for Windows [FFT v23.8]
Primality testing (5*10^66394-17)/3 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 2
Running N+1 test using discriminant 11, base 1+sqrt(11)
Running N+1 test using discriminant 11, base 3+sqrt(11)
Calling N-1 BLS with factored part 0.01% and helper 0.00% (0.02% proof)
(5*10^66394-17)/3 is Fermat and Lucas PRP! (2667.8445s+0.0060s)

To be completed...