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primenumbers · Prime numbers and primality testing

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  • Members: 1089
  • Category: Number Theory
  • Founded: Dec 27, 2000
  • Language: English
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Messages 19329 - 19361 of 25181   Oldest  |  < Older  |  Newer >  |  Newest
Messages: Simplify | Expand Author Sort by Date ^
19329 Paul Leyland
xilmanuk Send Email
Apr 11, 2008
8:26 am
... Wow! I'm impressed that you have a clock capable of measuring the time of a computation with 100ps accuracy! ... Many many times over the last few...
19330 leavemsg1 Send Email Apr 14, 2008
2:27 pm
at the yahoo group / (my website...) primeplausibles and tell me if you like it ???, especially the last posting. thanks, bill has the PhatPhil Auto-mody made...
19331 Jacques Tramu
gbrougnard Send Email
Apr 17, 2008
10:28 pm
well, you can download it here : http://www.echolalie.com/gbnums a lot of prime functions. Thx for your feedback ... http://www.echolalie.com ...
19335 darinraysmith Send Email Apr 21, 2008
12:22 am
I am an amateur mathmatician (hobbyist) and have been working on some gap theory problems for some time now. Is there a collection of works that specifically...
19336 reismann@...
nunki08 Send Email
Apr 24, 2008
11:03 am
Hi prime numbers group, "Decomposition of natural numbers into weight * level + jump and application to a new classification of prime numbers" website...
19337 richard_in_reading
richard_in_r... Send Email
Apr 28, 2008
12:48 pm
I'm trying to understand how the zeros of the zeta function can be used to approximate pi(x). From Tomás Oliveira e Silva's webpage I understand that if we...
19338 Andrey Kulsha
andrey_601 Send Email
Apr 28, 2008
1:00 pm
... http://en.wikipedia.org/wiki/Prime-counting_function#Formulas_for_prime-counting_functions ...
19339 Bernhard Helmes
bhelmes_1 Send Email
Apr 30, 2008
12:32 pm
A beautifull day, i have develloped a test for prime numbers mod 4 = 3. It recognize all primes mod 4 = 3 below 10^9. It uses complex numbers and needs only a...
19340 cedrick
floridaboi725 Send Email
May 2, 2008
12:54 am
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...
19341 Jens Kruse Andersen
jkand71 Send Email
May 2, 2008
1:45 am
... 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...
19342 Jean Penné
jpyah2001 Send Email
May 3, 2008
3:50 pm
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,...
19343 gulland68 Send Email May 4, 2008
1:20 am
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...
19344 Kermit Rose
kermit1941 Send Email
May 4, 2008
2:52 pm
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 +...
19345 Sebastian Martin
sebi_sebi Send Email
May 5, 2008
11:10 am
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...
19346 Kermit Rose
kermit1941 Send Email
May 6, 2008
12:11 pm
Define f_n(b) recursively by f0(b) = 0 f1(b) = 1 f_m(b) = b * f_(m-2) + f_(m-1) f0 = 0 f1 = 1 f2 = 1 f3 = b + 1 f4 = 2 b + 1 f5 = b**2 + 3b + 1 for b = 0 to...
19347 Kermit Rose
kermit1941 Send Email
May 6, 2008
12:27 pm
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...
19348 Sebastian Martin
sebi_sebi Send Email
May 7, 2008
7:52 pm
Let n,m  positive integres greater than one.   Let:   TW(n,m)=((n-1)!+1)((m-1)!+1)(n^2+m^2)/(n^2m^2+2nm)   We define n and m are  pseudotwinprimes iff ...
19349 Sebastian Martin
sebi_sebi Send Email
May 7, 2008
11:37 pm
I have found another PseudoTwinprime pair   41 and 1993  (1993 don't is Twin Prime) Sincerely Sebastián Martín Ruiz ... De: Sebastian Martin...
19350 Paolo Taraboi
olo4all@... Send Email
May 8, 2008
1:07 am
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...
19351 Sebastian Martin
sebi_sebi Send Email
May 8, 2008
11:51 pm
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     ...
19352 Phil Carmody
thefatphil Send Email
May 9, 2008
11:13 am
... 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...
19353 Paolo Taraboi
olo4all@... Send Email
May 9, 2008
5:55 pm
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...
19354 Sebastian Martin
sebi_sebi Send Email
May 10, 2008
10:06 pm
Hello:   I send you a puzzle for a new tipe of numbers:   http://www.primepuzzles.net/   Sincerely   Sebastián Martín Ruiz ...
19355 Paolo Taraboi
olo4all@... Send Email
May 11, 2008
10:10 am
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...
19356 Kermit Rose
kermit1941 Send Email
May 15, 2008
3:48 pm
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...
19357 jarek372000 Send Email May 17, 2008
6:16 am
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...
19358 Phil Carmody
thefatphil Send Email
May 17, 2008
8:47 am
... 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...
19359 jarek372000 Send Email May 17, 2008
9:45 am
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...
19360 Paul Schmidt
pschmid0 Send Email
May 17, 2008
1:33 pm
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...
19361 Jens Kruse Andersen
jkand71 Send Email
May 17, 2008
4:30 pm
... 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...
Messages 19329 - 19361 of 25181   Oldest  |  < Older  |  Newer >  |  Newest
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