Does anyone know of a coordinated search for the next primes of the form n!+/-1, or to which bounds these forms have been searched? The current records are on...
Hi Primeform group ... Ok. Pari has been running for 2 days on this (08:58) gp > g2(n)=forstep(x=1,n,6,if(ispseudoprime(17^x+2),print1(x","));if(is ...
Hello David, Congratulations for your efforts to find prime numbers. I remeet you on the top20 page for searching primenumbers and saw that you own the 7....
I have twenty-eight ten million digit integers that were found prime by the old Primeform. Anyone who can use PFGW Primeform or any other accepted Applet can...
I just set up a website listing more than 300,000 factors of n!+/-1. Thanks to Sean A. Irvine for the data. If anybody has more factors, please let me know!...
Happy New Year! On the prime list I have changed how credit is listed in the proof-codes. Instead of usernames I am using surnames. This should be clearer...
I wish also to congrat you, Paul, for this record! Also I am curious to know how are you selecting your candidates, and what sieving program are you using (is...
... Today I saw something for the first time on http://primes.utm.edu/primes/page.php?id=76518 : "Unofficial Comments: This prime has 1 user comment below " ...
Congrats to Paul and 3-2-1 for the indecently large prime http://primes.utm.edu/primes/page.php?id=76506 Chris: What does this mean, please: 16777259 33554467 ...
Hans Rosenthal and I have found the largest prime Fibonacci cofactor: F(30671)/1141737296775689 (6395 digits) GMP-ECM found the prime factor 1141737296775689. ...
Hi, I have noticed that Fermat primes of the form 3^3^n + 2 exist for n = 0,1,5 trying n=9 below I get for 3^19686+2 is composite, having the factor 83559 ...
Define the function V(i0,i1,i2,P,Q,R,n) to be the n'th term of the recurrence relation v[n] = P*v[n-1] + Q*v[n-2] + R*v[n-3], with initial values v[0]=i0, v[1]...
A search I was running found the following over Thanksgiving: Numerator[HarmonicNumber[51708]] is a 22453-digit PRP AFAIK, this is the largest known PRP of a...
When Bouk de Water told me, early this year, of his plan to raise the NTG top-20 waterline above 20k digits, by Christmas, I was frankly incredulous. Clearly,...
I have repaired 4 CHG proofs of Mike Oakes' PrPs: http://groups.yahoo.com/group/primeform/message/6469 12^10343 + lucasV(-10,-12,10343) - 1 is proven prime in ...
With huge help from John Renze, I have: 1) repaired the 33 proofs credited to http://primes.utm.edu/bios/page.php?id=797 that were invalid 2) validated the...
PFGW gave me the following error report this weekend, with instructions to contact bugs@.... Since the emails bounced back to me, I thought I'd post...
p = C(342397*2^36022+4,6)+1 is a binomial prime with 65093 digits. It was found and proved with PrimeForm/GW. Earlier David found a top-5000 prime C(x,4)+1...
It seems that David Linton has found a Riesel prime at k=345067, in defiance of Lee Stephens' expectation that independently minded folk would cede their...
In the File section of this group I have come accross this text regarding GMP DLL's "NOTE NOTE NOTE!! The way these DLL's are built, LARGE numbers can cause...
Hey guys, Has someone already posted this: http://mathworld.wolfram.com/news/2005-11-08/rsa-640/ -mm [Non-text portions of this message have been removed]...
