Plateau and Depression Prime (PDP)
http://www.worldofnumbers.com/deplat.htm
PFGW Version 3.4.8.64BIT.20110617.Win_Dev [GWNUM 26.6]
Primality testing (71*10^115810-17)/9 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 5
Running N-1 test using base 7
Running N+1 test using discriminant 17, base 1+sqrt(17)
Calling N-1 BLS with factored part 0.01% and helper 0.01% (0.04% proof)
(71*10^115810-17)/9 is Fermat and Lucas PRP! (5003.3912s+0.0088s)

To be completed...