Hi all, I want to check, without doubt, that number is prime. Using the -t -f -q command line options (got that from the beginners guide), it tells me my...
Hi all, I'm using the current dev version on a windows machine (P4 1.7), which runs a lot faster than the linux version on a p4 2.8 (I'm assuming because of...
http://listserv.nodak.edu/scripts/wa.exe?A2=ind0405&L=nmbrthry&P=R527 reports on a Carmichael number with 19 titanic prime factors. Here is the largest of...
Note, there has been a policy change on this group. Hopefully, it will not have an impact on current users (however, just in case, we will quickly take care...
I recently finished a primality proof of Phi(1051,2207) (certificate posted to http://srp.stanford.edu/pp/) and got a chance to try pfgw's -x option, since I...
http://www.matematicamente.it/giordano/una_nuova_congettura.pdf conjectures that between n^2 and (n+1)^2 there is always a prime pair whose average is n^2+n,...
Hi All, My search for >5000 digit BLS provable CPAP or triplet continues. I have now processed up to 1.4 billion (with another 300 million that are not...
Congrats to Jens and Harvey for 10^98689-429151924*10^49340-1 98689 p138 04 Palindrome It will be a long time before anyone finds a larger base-10 palindromic...
As Jane pointed out the prime+1 is divisible by 8. Thanks, Milton L. Brown miltbrown at earthlink.net ... From: jane91108 <jane91108@...> Sent: May 1,...
...\PrimeForm\pfgwdoc.txt: "When PFGW says a number is prime, the number IS prime, no doubt about it". pfgw.exe -t -q4 PFGW Version 20031222.Win_Dev (Beta...
Dear Primeform Group: After I put an expression in Primeform last night, it instantly said "stop", n=25, k=1. The cursor was still active. Does anyone know...
Dennis the Dachshund and Larry the Lamb claim (2^81454-2)^3+3^2 as (currently) the largest known prime of the form a^b+c^d with min(a,c)>1 and min(c,d)>2. Does...
The command "-od -qp(100010000)" resulted in "p(100010000) trivially factors as: 40009*50177" I first saw this error in WinPFGW Version 20030811. It is also in...
First the bad: I had my 3rd system die in the last year :( Been quite a pain. I know there may have been people who have emailed me in the past few weeks...
Here is a little challenge for those among you prime hunters who are interested in finding consecutive primes in arithmetic progression of length 3 (CPAP-3): ...
http://primes.utm.edu/primes/submit.php The following warnings have been noted: The description "10^69652+9*10^34818*(10^18-1)/99+1" was modified to...
Definitions (in the manner of wolfram.com): 1) Noddy primes are primes of the form (2^n-1)^3+2; 2) Big-Ears primes are primes of the form (2^n+1)^3-2; 3)...
ToyTown puzzle: Noddy claims that (2^n-1)^3+2 is prime for n=0,1,2,6,10,16,48,70,1196,3958,57096,59556,62440,70362 while Big-Ears claims that (2^n+1)^3-2 is...
