No retest is needed. The numbers were found quickly due to not having to "backtrack". The code computes 2^(2^1832495), 3^(2^1832496), 5^n 7^n, 11^n. It then...
What caused me the most concern was the 1232842.226000 time shown. Note that the wall clock time for the GF(11) case was on the order of 1-2 seconds, yet it...
... The gwnum library is indeed too aggressive in choosing FFT sizes. I'm working on isolating the problem. Unfortunately, any fix will appear in the 25.6...
... Background: FFT sizes have been set by trial and error using lots of Mersenne-only data over many years. When upgrading the FFTs to handle a wider...
Is it possible to build and run pfgw on SunOS 5.10 ? I tried to build it on SunOS 5.10 Generic_118844-26 i86pc i386 i86pc but I got the following error: ...
The strange behaviour is that on a Linux machine the build works fine but , on the SAME SOURCE CODE LINES OF THE SUN OS ERROR, gives the following warnings: ...
Hello group, Do you have any idea why openpfgw systematically crashes on systems with xeon processors ? I have 2 servers, one linux box and one windows box...
Not sure on Windows, but on Linux, it's failing because NX (no execute) or XD (execute disable) is set in your BIOS. This is designed to prevent some trojans...
Hi Greg, ... executed. ... another ... You're perfectly right! I've check my W2003SP2 server and my Linux server and both have NX activated. Thanks a lot for...
... I don't know of any way to do it at runtime. I think you can disable NX at boot by passing the option noexec=off to the kernel. If you use grub, you can...
Can someone help me at all please (I've looked in the 'files' section, and also can't see an obvious FAQ, but...) I want to verify primality of a few PRPs (as...
Only if you know 33% of the factors of N-1 or N+1. You can use KP if you know 30% of the factors, and CHG if you know >25% (or perhaps 26% in practice)....
... Hi (once again) Greg, and thanks for your help. I successfully d/led pfgw_ver_12_linux (from the other/user group) and also got it running in an old(er)...
... Primo 3.0.6 is artificially capped at 3000 decimal digits. You will have to look for the 2.3.3 somewhere on the web. /wink-wink/ ... try the Files section...
Hi Serge, Thanks for your email/post - sounds fun, what you're up to!! :) Mine are from: http://www.research.att.com/~njas/sequences/A057468 and I'm now on the...
Where is the current source for PFGW? The only source in the group is for the version using the v23 Woltman libraries. The newer executable (the one...
Mark & all, I have ample free time (been sick, but getting better now) and am willing to help / work to put together the appropriate Linux versions. (32 bit...
Hello fellow group members, After a long time I rear my head by posting a proof for a Wagstaff number primality test. This test is similar to the well known...
... This would be better on the primenumbers list. ... "Consider an element w ... that has no solution w^k == 1" is meaningless. Skipping everything before it,...
... 1) As Phil noted, there is horrific garbling of the meaning of "order". 2) The use of "i" for sqrt(-1) is meaningless, since W_p = 3 mod 4. 3) Anton has...
... I meant that there is no such "i" in Z_{W_p}. In Z_{W_p}[sqrt(2)], we make take i = 2^((p-1)/2)*sqrt(2), so that i^2+1 = 3*W_p = 0 mod W_p. David...
I have had no contact from anyone with access to the source built on the v24 gwnum library. Jim Fougeron has not answered any e-mails so I don't know if he is...
Thank you Phil and thank you David for pointing out my mistakes I cannot transfer to the other forum as my privallages are not enough to upload files. Instead...
... Seems is the incorrect word - Has withdrawn is correct I did type an apology to be posted on this forum - It seems I did not hit the send button! best...
My oversight, is that my claim to the order of $\alpha$ is wrong. The proof of Bruce works because when he states $\omega^{2^p}=1$ and $\omega^{2^{p-1}}=-1$...
Maybe just a side remark: Please check the sources, if you happen to get the newest ones. I have been checking the prime 847*2^519964 + 1, which I found by...
Hi group, Can anyone tell me (or even better send me) where I can find the latest (statically compiled if possible) version of openpfgw for Linux or at least...
