|Bill Allombert on Sun, 06 May 2012 20:18:09 +0200|
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|Re: nextprime or isprime - which is faster|
On Sun, May 06, 2012 at 02:54:09AM -0700, zak seidov wrote: > i run (elementary) pari for 12-13 digit numbers looking for some primes, > and wonder which command is faster nextprime or isprime. nextprime only check for pseudoprimality (like ispseudoprime) so is faster than isprime for large primes. > I use: > > Reading GPRC: /cygdrive/c/Program Files/PARI/.gprc ...Done. > GP/PARI CALCULATOR Version 2.3.4 (released) > i686 running cygwin (ix86/GMP-4.2.1 kernel) 32-bit version > compiled: Jul 12 2008, gcc-3.4.4 (cygming special, gdc 0.12, using dmd 0.125) > (readline v5.2 enabled, extended help available) > Copyright (C) 2000-2006 The PARI Group Please try to upgrade to PARI 2.5.1. > btw is "extended help available", i guess not This is a known problem with the PARI 2.3 installer on Vista/win7 Cheers, Bill.