PARI's commands

[CRGreathouse]

Originally Posted by science_man_88

I have a windows system I'm not for pay but I suck lol.

Well, the way to get better (of which the first stage is starting to not suck) is to program, and a great way to do that is to work on an open-source program like Pari. This particular task is probably too hard for you, but one may come along that is appropriate.

The best part of working on these systems is that it's a great way to advertise your skills to potential employers. You can say that you worked on the project and then show your actual contributions.

[3.14159]

Originally Posted by CRGreathouse

I just discussed that in my last post. There are already new SVN binaries on the site that you can download. But there isn't a new installer, and won't be in the near future, due to difficulties with Vista, Win7, and cygwin/mingw/perl on those systems.

Finding skilled Windows programmers willing to work for free isn't that easy.

Yeah, but those binaries are tarballs. Unusable.

[CRGreathouse]

Originally Posted by 3.14159

Yeah, but those binaries are tarballs. Unusable.

You're downloading the wrong thing.

[3.14159]

Originally Posted by Charles

You're downloading the wrong thing.

Well, please link to the "correct" items.

[CRGreathouse]

Originally Posted by 3.14159

Well, please link to the "correct" items.

Really? It's right on the download page!

[3.14159]

Originally Posted by CRGreathouse

Really? It's right on the download page!

Attachment 5917

Oh. Didn't see that. Thanks.

[CRGreathouse]

Originally Posted by 3.14159

Oh. Didn't see that. Thanks.

No problem. You should put the binary in a directory with the .gprc file (probably C:\Program Files\PARI or C:\Program Files (x86)\PARI) or you won't get the colors, default primelimit, etc. from that file.

Unfortunately readline and the high-resolution graphics aren't included in that version AFAIK. I'd like to see that fixed; if I have a chance maybe I'll look into it. But that probably won't happen until next year -- I have a lot of consulting work to do these next few months.

[3.14159]

I'm not sure if I even got to explore all of PARI's features as of yet. I know a bit of programming, some number theoretic functions, and how to somewhat randomly generate semiprime or prime numbers.

a(n) = My prime-generating function.

[science_man_88]

lucaslehmer(p)= s=4;for(x=1,p-2,s=(s^2-2)%(2^p-1));if(s==0,return(1),return(0))

my best code so far not that it matters.

[axn]

Originally Posted by science_man_88

lucaslehmer(p)= s=4;for(x=1,p-2,s=(s^2-2)%(2^p-1));if(s==0,return(1),return(0))

my best code so far not that it matters.

lucaslehmer(p)= s=Mod(4, 2^p-1);for(x=1,p-2,s=s^2-2);if(s==0,1,0);

Some small changes.

[science_man_88]

Originally Posted by axn

lucaslehmer(p)= s=Mod(4, 2^p-1);for(x=1,p-2,s=s^2-2);if(s==0,1,0);

Some small changes.

thanks axn you're pretty nice. I have a second implementation to catch all p that have sumdigits(last result)==9 now, as well as one for all #'s that have sumdigits(last result)==9.Neither sequence is in the OEIS but I haven't found much of a pattern yet either so they may not be of interest. I may check back soon if i can find a pattern.