Generalized repunit

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

(142^7537+1)/143 is 3-PRP! (25.4494s+0.5010s) (2008-11-01, 12h52m UTC)

Additional tests:
(142^7537+1)/143 is 2-PRP! (29.1946s+0.0005s)
(142^7537+1)/143 is 5-PRP! (25.2276s+0.0005s)
(142^7537+1)/143 is 7-PRP! (29.2234s+0.0004s)
(142^7537+1)/143 is 11-PRP! (25.2952s+0.0004s)

To be completed...