Generalized repunit

Open WinPFGW Version 1.30 - PFGW Version 1.2.0 for Windows [FFT v23.8]

(147^6599+1)/148 is 3-PRP! (18.8803s+0.3874s) (2008-11-03, 10h13m UTC)

Additional results:
(147^6599+1)/148 is 2-PRP! (27.3000s+0.0005s)
(147^6599+1)/148 is 5-PRP! (24.9390s+0.0005s)
(147^6599+1)/148 is 7-PRP! (27.2134s+0.0006s)
(147^6599+1)/148 is 11-PRP! (24.6557s+0.0004s)

To be completed...