Periodically, I am moved to contribute off-topic numbers. Today, I should like to comment on these numerical data: ...
15512
David Broadhurst
djbroadhurst
Oct 30, 2004 1:43 pm
It is well explained in CP 4.2.3. For a slight improvement, see http://groups.yahoo.com/group/primeform/message/2497 for the time-consuming supercritical case,...
15511
mad37wriggle
Oct 29, 2004 12:01 pm
I seem to recall that there is a result due to Lenstra that states that if the factors of a number N are known to be congruent to 1 mod some modulus larger...
15510
Jens Kruse Andersen
jkand71
Oct 28, 2004 12:44 pm
... It sounds like you require "Closest" to have consecutive t's. Then there are no solutions for t>5 as shown below. My suggestion was "the closest they can...
15509
Mazzarello Gianni
mzzgv
Oct 28, 2004 10:15 am
Surely today you'll find almost everything that is done better than what you can do. Among the few things one can do better by oneself remain to eat, to sleep...
15508
Ben Bradley
ben_nospam_b...
Oct 27, 2004 8:54 pm
... In addition to the others mentioned, I've used the MIRACL library in C (google for it), which is available for free download. The version I've used is from...
15507
Paul Leyland
xilmanuk
Oct 27, 2004 8:15 pm
... By far the best suggestion! Paul...
15506
Robin Garcia
sopadeajo2001
Oct 27, 2004 6:54 pm
Define Closest n^2+1 twin primes as numbers n =m+10*t /+2 t=0,1,2,3,... (m=4 mod 10) such that n^2+1 is prime This naming could be changed: a name...
15505
Greg@...
mazur1947
Oct 27, 2004 5:45 pm
In a message dated 10/26/04 7:53:19 PM Eastern Daylight Time, ... You said its unenlightening to view primes from other perspectives like the Ramanujan series,...
15504
jim_fougeron
Oct 27, 2004 12:27 pm
For C, about the best large number math library is GMP (which stands for GNU Multi-Precision). It can be found at the web site http://www.swox.com/gmp/ It is...
15503
Décio Luiz Gazzoni...
deciogazzoni
Oct 27, 2004 12:22 pm
... See http://www.swox.com/gmp for the best (IMO) C/C++ library for bignum computation. As for Fortran, I've read about Dr. David Bailey's MPFUN ...
15502
Ben Newsam
primes@...
Oct 27, 2004 11:14 am
In message <e0.4c5bc6f.2eb03bc9@...>, Greg@... writes ... Wow. For "Recursion", see under "Recursion". -- Ben Newsam...
15501
Mazzarello Gianni
mzzgv
Oct 27, 2004 10:25 am
I think you'll find useful the following links: The web site name is www.visual-basic-data-mining.net But there are links to C and C++ code. ...
15500
aernst82
Oct 27, 2004 10:06 am
Hi: Does a library for Fortran or C exist, where these suggestions are already implemented? Andreas...
15499
Mazzarello Gianni
mzzgv
Oct 27, 2004 9:10 am
Hello. If you work in numeric system in base 256 instead of base 10 and an array of 100 elements, each of one Byte (it could be an alphanumeric string of 100B)...
15498
Paul Leyland
xilmanuk
Oct 27, 2004 8:50 am
... Here's a clue: A digit can only represent numbers up to and including nine. A sequence of digits can represent much bigger numbers. A two digit...
15497
Andreas Ernst
aernst82
Oct 27, 2004 7:50 am
Hi: I would like to know, how prime number programs deal with high numbers. For example, the INTEGER data type can only handle numbers up to about 32000....
15496
primenumbers@yahoogro...
Oct 27, 2004 12:20 am
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the primenumbers group. File :...
15495
primenumbers@yahoogro...
Oct 27, 2004 12:17 am
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the primenumbers group. File :...
15494
primenumbers@yahoogro...
Oct 27, 2004 12:12 am
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the primenumbers group. File :...
15493
cedric lorand
clorand
Oct 26, 2004 11:53 pm
... A prime numver is a prime number? What exactly do you mean? ************************************************************** Cédric Lorand 54140 BURDETTE ST...
15492
Greg@...
mazur1947
Oct 26, 2004 11:46 pm
In a message dated 10/26/04 7:24:32 PM Eastern Daylight Time, ... My thoughts? Ok. 3 is a prime number. To paraphrase, a prime number is a prime number that...
15491
cedric lorand
clorand
Oct 26, 2004 11:24 pm
I strongly disagree with your "deconstructivist" approach, because you have not exposed any convincing argument that successfully invalidates the classical ...
15490
Greg@...
mazur1947
Oct 26, 2004 11:24 pm
My 10/26 post should have been deleted from my 10/22 out box. Sorry for the duplication. Greg [Non-text portions of this message have been removed]...
15489
Greg@...
mazur1947
Oct 26, 2004 11:13 pm
Your comment: "This is just plain silly. One could as easily, and much more simply, say sqrt(8) = 2 * Sqrt(2)." Your example may be easy, simple and silly....
15488
Mazzarello Gianni
mzzgv
Oct 25, 2004 9:41 am
The -l option (i.e. pfgw.exe -l input.txt) send the result to the file pfgw.out Gianni...
15487
Mazzarello Gianni
mzzgv
Oct 25, 2004 9:05 am
Hello I'm new enough here and still I don't know the meaning of PRP and acronyms like this. May be pfgw.exe is an old DOS style program? If you are using it...
15486
Norman Luhn
nluhn
Oct 24, 2004 5:55 pm
Hello members ! Sometimes I use PFGW V1.2 to make a PRP-test for small numbers (>40 digits). Example : pfgw.exe -(?) input.txt I need a command line to get...
15485
Jens Kruse Andersen
jkand71
Oct 24, 2004 1:42 am
... Congratulations! This is also the largest known case of 3 simultaneous primes (improving your own CC 1st kind record). I have updated...
15484
jiongsun
Oct 24, 2004 12:44 am
Hi, I am happy to announce the finding of a record CC3 today: 2366867925*2^17206+1 Cunningham chain 2nd kind (p) 5189 digits 2366867925*2^17207+1 Cunningham...
