Hi, I have just now seen that there is an "alpha" version of Primo for linux which supports multi-core computers. I hope to see some results using this program...
Hello, calculate the rests r1,r2,....of ((....((2^p-2)/p)-r1)/p-r2)/p with 2^p-1 mersenne pirme I have found that (2^2-2)/2=2 ; 2= 4 div 2 ; for 2^2-1=3 ...
Hi does anybody know if Henri is still maintaining his database of Bitwins? I have mailed him a couple of times over 2 months ago and still have not got a...
Thanks for your contributions. I should have been more detailed in my original comments. Jens' terms (average etc) are clear to me. Amongst all this - what are...
Centuries refer to ranges [100X+1,100X+99]. Does anyone happen to know where the first repetition of the primes in a century occurs? I see no reason to suspect...
An example or two at the decadal level will clarify: The first pattern repetition is {53,59} following {23,29}. The first void pairing occurs much later. A...
One sequnce of number not on the integer sequence encyclopedia that is related to prime numbers has its first three terms 271, 577, 661. I did try to remember...
A beautiful day to all primers, i have develloped a prime sieve base on Ulam for a Cuda Graphic Card. Results: constant ca 8.317.200 Primes / sec on a Cuda...
Hi All, 1) I know this is a moving target, but as people continue to calculate pi (3.14...) to ever increasing number of decimal places surely someone out...
Hi, congratulations to David Broadhurst for discovering the two AP3s based on Primegrid's prime numbers, in their search for a twin and Sophie Germain pairs....
Y'all, Prime numbers may be created by: 1. start with a tube with circumference of 1 (unit) and mark a straight line that runs the length of the tube and is...
Hello, let Q= k*2^n +1, k< 2^n +1 be odd, and 'n' be prime. Proth extended: if a^((Q-1)/4) == +/-1(mod Q), then 'Q' is prime. my rule: also, if a= 2 & n is...
It is my contention that the principle of Primemine2 makes it a valid primality test for all 8499 batches of outputs produced. Since proof for this type of en...
Hi, just thought I would share this njew Bi twin record with the list:- 111800699636*3989#+1 111800699636*3989#-1 2*111800699636*3989#+1 2*111800699636*3989#-1...
Speculations concerning binary quadratic forms and issquare functions: The primemine programs that were posted at this PN website needed no reference to...
My aim with primemine2 (pm2) was to reach primes of 20 digits using the same basic principles of the first prime mine while maintaining a good primes found /...
Hi, I am verifying the 6-selfridge "quadratic composite tests" detailed in my paper in the file section of this group. I made some changes and I am now testing...
ok send any n which satisfy the condition i accept the challenge never more than 400 digits it will take some more time using manual method . [Non-text...
can someone send to me a real numbre satisfy p - q < sqrt(p) maximum digits for n = 300 digit minimum digits for p-q = 100 note n= p*q p>q p-q < sqrt(p) ...
pq, are integers p*q = n p>q if p-q < sqrt (p) we can automatically (factor) n note : the absolute value (p-q < sqrt p) regardless of it's length i can find a...
wath is the composite Mersenne number with small proven prime factors. example : 2^49499-1 factor = 98999 is very smal i found this but i dont know if it...
I've submitted curios on the following little things: 1) The number of primes under 1000 digits that are a concatenation of 3 or a power of 3 and 7 or a power...
I have obtained a curious aproximation to Apery constant Zeta(3)= 1.2020569031595942... (199/155)(16/165)^(3/2)Pi^3 Can someone test with a super computer...
Hello all: My ​​equivalence for twin primes has been posted today here:  http://www.primepuzzles.net/puzzles/puzz_580.htm  Sincerely  Sebastian...
I have finished up changes for PFGW 3.4.6. Here is a list of changes: 1) Use gwnum for POWMOD script function when numbers are larger than 650 bits. 2) Added...
