... Excellent--I will be looking for it. ... Usually the person's degrees are totally ignored. It is the quality of the work that matters. But if you are...
Andy, It looks like we might be treading over similar territory then. b=152 is also the smallest positive b I haven't found a prp GRU yet, and I've searched up...
I was wondering if anyone could tell me what '3-PRP' means. I understand PRP, but not the relation to 3. In Paul Jobling's NewPGEN sieving software there is a...
... A PRP is a probably prime. This is determined by a probabilistic test - p is an a-PRP if a^(p-1) = 1 mod p. In this case, the value of a chosen is 3. ...
Hi, I have a question regarding the helper file for pfgw. Can you use one when doing a -tc test? If you can, do you have to separate factors of N-1 from N+1,...
Simply put all known factors (or N-1 and or N+1) into a single file. Make sure the factors are prime (PFGW does not validate that the listed factors are...
In http://primes.utm.edu/primes/status.php you find (while I am writing this mail): 858 10^71316+610747016*10^35654+1 71317 D 2004 Palindrome wherein...
Uh, do to a software problem (McAffee anti virus clashing with Eudora 6.0.1) I have not received about 40% of my mail for the past 10 days. The problem was...
I was browsing Andy Steward's Titanic prime GRU list page, and noticed that the eligibility/legality requirement is stated as "the base may not exceed five...
Tom: Andy and Chris mean the same thing. The "digits" are counted in the relevant base. So N=(b^p-1)/(b-1) with 2 < b < 5*p in both sets of web pages. David...
Hi all, After 17 months, on a P3-800, a P4-2400 and finally a P4-2800, Primo has certified that Bell(2841), a 6531 digit number, is prime. It isnīt a Primo ...
Hans Rosenthal and I have found the largest known 11-tuplet at 70 digits: 34101658*157# + 164826429367331 + 0, 2, 6, 8, 12, 18, 20, 26, 30, 32, 36 The search...
A quick comparison, not really a benchmark.. Just tried out genefer80.exe vs PFGW Version 20031222.Win_Dev on a windows2000 box with an athlon 2400+ on a...
... Can GeneFer produce a checksum/remainder whatever for composites? Also can it test with a different base or different FFT size for checking? Andrew...
...in the world of prime gaps would count, say in this way: "Largest prime gap with the shortest possible representation", ... Found gap of 12816 at...
... The GFN DWT logic isn't being triggered. A little experimenting shows that it doesn't work for exponents larger than 4096. fecundfec: Since PFGW isn't...
Here are the limits of PFGW: switch(*GFN_Exp) { case (1<<5): return *GFN_Base <= 12123055; // b^32 case (1<<6): return *GFN_Base <= 10084421; // b^64 case...
Hans Rosenthal wrote: If shortness of the representation... ... 2^1200 = 4^600 = 8^400 saves one character. Perhaps what Hans later hinted by _a digit_? There...
Thanks for the details. In the time honored tradition, I understand only a little and I want a lot. I am indeed investigating pfgw because genefer doesn't do...
FYI, OpenPFGW can only be compiled and run on x86 CPUs due to the x86 asm routines used for the FFT. Nobody (as of yet) has plugged in an FFT such as FFTW or...
... Very nice. The Top-20 Prime Gaps has now officially opened. After some consideration, I decided (before seing this gap) to include the single largest gap...
...within Nicely's page: Base is N = 2^1200+k. Gap is N from k to k+gap. gap k You may 12134 259684087171 Make it ! 12390 114286266007 Make it ! 12406...
...has already been found. A prime megagap 1M is of length >= 10^6. "Interesting" in this context means that the gap has a merit of at least 10. How long will...
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