Plateau and Depression Prime (PDP)
http://www.worldofnumbers.com/deplat.htm
PFGW Version 3.4.2.64BIT.20101019.Win_Dev [GWNUM 26.4]
Primality testing (68*10^74434+13)/9 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 2
Running N+1 test using discriminant 5, base 5+sqrt(5)
Calling N-1 BLS with factored part 0.01% and helper 0.00% (0.04% proof)
(68*10^74434+13)/9 is Fermat and Lucas PRP! (1692.7921s+0.0019s)
Done.

To be completed...