GP/PARI CALCULATOR Version 2.8.0 (development 18108-50cacee)

          amd64 running linux (x86-64/GMP-6.0.0 kernel) 64-bit version

   compiled: Oct 14 2015, gcc version 5.2.1 20151003 (Ubuntu 5.2.1-21ubuntu2)

                           threading engine: pthread

                (readline v6.3 disabled, extended help enabled)

                     Copyright (C) 2000-2015 The PARI Group

PARI/GP is free software, covered by the GNU General Public License, and comes

WITHOUT ANY WARRANTY WHATSOEVER.

Type ? for help, \q to quit.

Type ?15 for how to get moral (and possibly technical) support.

parisize = 8000000, primelimit = 500000, nbthreads = 2

   echo = 1 (on)

? lfunan(2^63+5,10);

  ***   at top-level: lfunan(2^63+5,10)

  ***                 ^-----------------

  *** lfunan: bug in PARI/GP (Segmentation Fault), please report.