Phi(117790,10)/471161
(10^58895+1)/(10^11779+1)/4283324651
http://factordb.com/index.php?id=1100000000777655248
http://stdkmd.com/nrr/repunit/prpfactors.htm
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makoto@betelgeuse /cygdrive/c/tools/pfgw_win_3.7.7_20130722
$ ./pfgw64 -tc -q"Phi(117790,10)/471161"
PFGW Version 3.7.7.64BIT.20130722.Win_Dev [GWNUM 27.11]

Primality testing Phi(117790,10)/471161 [N-1/N+1, Brillhart-Lehmer-Selfridge]
Running N-1 test using base 2
Running N+1 test using discriminant 11, base 2+sqrt(11)
Calling N-1 BLS with factored part 0.03% and helper 0.01% (0.10% proof)
Phi(117790,10)/471161 is Fermat and Lucas PRP! (190.5288s+0.0470s)
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To be completed...