Dear members, after 59 quintuplets , I found a nice prime sextuplet at 559 digits. The lucky numbers are 601545895935 * 1300# + 43777 + d , d= 0,4,6,10,12,16. ...
Hello Jens, " By the way, Tony is one of the few people to say "world record" about prime records other than the largest known prime. Has a regional prime...
... Yes, they are all world records. It was a silly comment about Tony's expression and not your record. My point is that most people omit "world" and only say...
... I have a possibly pedantic question. Why is 1300# rather than 1297# used in this expression? I think they are equivalent and it seems simpler to use the...
Hello Tom, you have right. 1297# = 1300#, but primenumbers have never a beautiful "round" impression for our eyes :-). I like it more. The editor of a...
I'm posing the question: Does this criteria always expose 2-pseudoprimes ??? (sorry if I'm not using the maths totally correctly) let 2^(Q-1) mod Q == 1 where...
... Simply test it on some well known imposters, such as 1530787 1987021 2284453 3116107 5173601 6787327 11541307 .... 9995890618199641 9996515922463949 ...
... The target is a product of 3 primitive parts gcd(primU(52,1,3),lucasU(52,1,8)-lucasU(52,1,7)) trivially factors as: 3*17 Using modular factorization:...
Dear, Dr. Roy... at Drexel Univisity's 'Ask Dr. Math'. I think... if I'm right, I better stop while I'm ahead. I can provide other examples... if someone wants...
... From: Bill Bouris <leavemsg1@...> Subject: Re: [primeform] parity test & 2-PRP together determines primality To: primeform@yahoogroups.com Date:...
Mike, You can install cygwin on your Windows machine http://www.cygwin.com/ then you can start Pari on cygwin command line using Windows gp.exe binary, and use...
Hi, This works in 2.3.4 and 2.4.2 windows xp pro Also works in vista 64 but you may need to install cygwin 1.7 beta That is the only thing that would finally...
Background: Jim Fougeron is no longer maintaining PFGW. Since he vanished the underlying FFT libraries have been improved, MacIntel Windows 64-bit, and Linux...
I'll volunteer for MacIntel. One question I have is whether or not the new source should be put into sourceforge. That would make it easier for people to...
... Thanks, Mark. A MacIntel port will get us 99% of the way to successful linux ports. For those that wish to follow developments further, I'll make all...
I guess that a list of needed tests could be useful. I would volunteer to do some. Otherwise, one should test ALL the possible switches' combination to be...
I am going to limit my followup to the primeform group, although I think that the openpfgw group might be better. I have been able to port PFGW to MacIntel....
... I'll debug this tomorrow. The FieldLucas code was kind of weird - its not too surprising that I broke it. Thanks for finding the two examples. ... V1.2...
... The alpha version pfgw 20050213 with unreleased source had POWMOD with arbitrary parameters in the script language. This made it possible for a script to...
... 64-bit Windows can run 32-bit executables. ... I'll email the Mac 64-bit gwnum library and the build script I use for prime95. It allows you to easily...
... I recommend implementing this as follows: 1) Upgrade or subclass the Integer class to have an "also known as" value. Where we keep track of whether the...
I have been able to build PFGW on MacIntel, thanks mainly to George for upgrading PFGW to use v25 of his FFT library. If any MacIntel users are interested in...
Please download them and (try to) find test cases that fail. What's new since last pre-alpha 3.0 release. 1) Statically linked with C runtime library so that...
Now i understand why. Nevertheless what is the best way with Pari to know if certain numbers are perfect powers??? ? for(n=1,30,print([n,floor(sqrtn(n^3,3))]))...
... Thank you Cino. I did not know ispower existed.It works (i have tried it) on my Pari. But it seems that there is no documentation on it on my refcard.pdf...
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