anybody know what the 10^13th prime number is? and if you know that one can u also list the 10^14th and 15th and so on til 20th if you may? i found a pattern...
... See http://www.research.att.com/~njas/sequences/A006988 for up to 10^18. At http://primes.utm.edu/nthprime/index.php you can find the nth prime for any n...
113983·2^3201175-1 963655 L613 May 2008 (rank 19) Congrats to the discoverer and to the Rieselsieve project for this near megadigit Riesel prime discovery,...
I have a question about notation. I'm trying to formulate an approach to the sieve of Eratosthenes while working into the model principles that are not...
One of my factoring schemes evolved into the following. z represents the integer to be factored. Let r1,r2,r3 be three primes selected so that (r1 + r2 + r3 +...
Hello All: I send a new conjecture: Conjecture for integer linear combinations of primes ... Let n a even number , for all 2<=k <=n/2 exists one or more...
1. Conjecture for integer linear combinations of primes Posted by: "Sebastian Martin" sebi_sebi@... sebi_sebi Date: Mon May 5, 2008 4:10 am ((PDT)) Q1=Is...
Is well known that prime numbers can be found with sieve of Eratosthenes
and that they are all type 6n+1 or 6n-1. I do not think that it's already known that...
Paolo Taraboi
olo4all@...
May 8, 2008 1:07 am
19351
Hello: I send you: PseudoTwin primes 2<=n,m<=2000 There are only two pairs that donn't are Twin Primes PSEUDOTWIN PRIMES PSEUDOPRIMOS GEMELOS ...
... 2 isn't. There's another one too, but I'll let you work that one out yourself. ... You think incorrectly. It's a direct consequence of the corrected...
Well, this is a sophism. It's true: 2 and 3 are primes but not 6k+-1; but I suppose primes should be ordered in different levels of quality: 1 is a prime...
Paolo Taraboi
olo4all@...
May 9, 2008 5:55 pm
19354
Hello: I send you a puzzle for a new tipe of numbers: http://www.primepuzzles.net/ Sincerely Sebastián Martín Ruiz ...
This is a first version of the prg which uses twon long-based vector as a
prime position index and long for values; I'm working (with some difficults) on a...
Paolo Taraboi
olo4all@...
May 11, 2008 10:10 am
19356
Diaphantine Analysis Consider the equation x y = z where z is a given positive integer, not prime, and not divisible by a small prime. z is odd. z = x y z is...
This morning the first known AP25 has been discovered: 6171054912832631 + 366384*23#*n, for n=0 to 24 (Raanan Chermoni & Jaroslaw Wroblewski, May 17 2008) My...
... Wow! A marvelous find. I think a lot of people here have been crossing their fingers for you over the last few months as the AP24s have been coming in, I...
I am not sure what was the exact CPU power used, as Raanan was distributing the program among his computers, and also the number and kind of computers he had...
Jarek, I might be interested in helping to set up a distributed system. Since each segment is independent, this shouldn't take anything fancy. I am a...
... Huge congratulations! This is a very impressive and well deserved feat. http://hjem.get2net.dk/jka/math/aprecords.htm is updated. As the only known AP25 it...
Each Sierpinski (and Riesel) number and the dual of it always have the same covering set as it is easy to see. So we only need to find a prime for a candidate...
... I agree! Decided to change my 2006 banner notes about the last Mersenne to this AP on my "main" page primes.utm.edu/ and primes.utm.edu/largest.html ... ...
From: Lélio Ribeiro de Paula ... By Sierpinski's definitions, finding a prime in the dual set does not remove the k value as a candidate to be what was later...
Your idea is very interesting. My readings about near-repdigit numbers has made me fascinated by Sierpinski and Riesel numbers and especially their covering...
... No, it cannot. The covering sets of all known Riesel and Sierpinski numbers are exactly the same as that of their duals, as can be easily seen. So if a...
... Now reread what Jack wrote (which was also going be in my original post too, but thinking that it was a bit obvious I removed it for brevity), and think a...
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