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primenumbers · Prime numbers and primality testing

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  • Members: 1091
  • Category: Number Theory
  • Founded: Dec 27, 2000
  • Language: English
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Hi, You can see some graphs about my vision of the numbers on this page: http://pulse.yahoo.com/_RHZTV4FY4CNYZSC5RWTXOMN5VI/album This vision is both additive...
1 Jul 21, 2010
10:54 am

Rémi Eismann
nunki08
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Hello all. Let me introduce myself, briefly. I'm 40, married and have five children. I've studied at the Università Ca' Foscari di Venezia. I'm employeed...
7 Jul 18, 2010
12:49 pm

LALGUDI BALASUNDARAM
lalgudibalas...
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A beautifull evening, I am not sure if this is the right place to ask a mathematical question about number theory, but i hope that there is somebody who can...
1 Jul 17, 2010
7:37 pm

bhelmes_1
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Oops! I'd meant to send this to the list as well as to Mike but failed to Cc-all. As stated below, I won't pollute the list with more on this topic but if ...
1 Jul 17, 2010
6:48 pm

Paul Leyland
xilmanuk
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Peace to all, Can someone please tell me what is the best way to find the Nth index of the following not so large prime numbers? 12345678910987654321 (from 1...
6 Jul 14, 2010
7:22 pm

pbtoau
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pi(x) - pi(x/7) > sqrt(x) proved by N. Shapiro pi(x) > sqrt(x) + pi(x/7) let x = p_(n +1) and p_n so that pi( p_(n +1)) - pi( p_n) > sqrt( p_(n +1)) + pi( p_(n...
4 Jul 14, 2010
7:00 pm

John
reddwarf2956
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David. You are skeptical about my result. But look: If the value (m) equals the sum of primes. We have: The error calculation of the number of primes in the...
2 Jul 12, 2010
4:56 pm

djbroadhurst
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A beautifull day Do you know whether there exists a fermat pseudoprime of the form p:=n^2+n+1 By the way i started a small collection of 1000 digit primes of...
3 Jul 11, 2010
1:01 am

djbroadhurst
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P_n^2 <m <P _ (n+1) ^2 For the left restriction (P_n^2) value (m) can pass. It is a question of an error of calculation. For the right restriction it is...
1 Jul 10, 2010
6:18 am

Ситников ...
chitatel2000
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David, while I'll deal with your comment, look at the additional condition Additional condition (m) - Prime number m_p P_n^2<m_p<P_(n+1)^2 P_n - Primes n –...
2 Jul 8, 2010
11:08 am

djbroadhurst
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International Journal of Mathematics and Computation   ISSN 0974-570X (Online), ISSN 0974-5718 (Print), www.ceser.res.in/ijmc.html ...
1 Jul 8, 2010
5:02 am

Journals IJI / IJAI /...
eic_iji
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I'm Alberto Zelaya, lawyer and retired diplomat of the Argentine Foreign Service. I served in Algeria, Colombia and New Zealand. I write some fiction short...
1 Jul 8, 2010
12:58 am

Alberto Zelaya
albrtzlya
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Given the value (m) p_n^2 < m < p_{n + 1}^2 p_n - primes n – prime number E – error in calculating the number of primes in the interval (p_n,m) By formula...
5 Jul 7, 2010
11:15 pm

djbroadhurst
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Given the value (m) p_n^2<m<p_n+1^2 p_n - primes n – prime number m*p_n+1/p_(n+1)-1=m_1 The interval (m, m_1) - one prime?...
1 Jul 7, 2010
3:10 pm

Ситников ...
chitatel2000
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Hi All, I noticed some "low hanging fruit" on Jens' "The Largest Known CPAP's" page. http://users.cybercity.dk/~dsl522332/math/cpap.htm - !!CPAP-5!! - (Gap...
4 Jul 7, 2010
1:25 am

kraDen
kradenken
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Again using cpapsieve Find_CPapn pfgw Primo Cheers Ken...
1 Jul 5, 2010
7:22 am

kraDen
kradenken
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The munchkin seive is actually 2 analogous seives, one for 6n+1 primes (npp) and the other for 6n-1 primes (npm). The 6n + 1 seive Let a be a positive integer....
1 Jul 3, 2010
6:55 am

William
fatbobforman
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1,2,3,4,5,6,7,8,9;Unity 2,4,6,8,1,3,5,7,9;Decision 3,6,9;Seed 4,8,3,7,2,6,1,5,9;Building 5,1,6,2,7,3,8,4,9;Expansion 6,3,9;Harmony 7,5,3,1,8,6,4,2,9;Mystery ...
1 Jun 24, 2010
3:57 pm

Yann GUIDON
yasep16
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Here are 2 well known algebraic expressions; A=(((v-2)*r^2)-((v-4)*r))/2 and B=((v*(r^2))-v*r+2)/2. For positive integer values of v>2 and r>1, A evaluates to...
1 Jun 24, 2010
2:38 pm

w_sindelar@...
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what we observe in nature we call physics. what we see in physics, follows the rules of math. Above here i wrote down relation to the outside world and math. ...
9 Jun 23, 2010
5:45 am

Martin Aaronson
martin_aaronson
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To: Prime Numbers Group Topic: Product Convergence (p-2)/p Some weeks ago Tim Roberts posted a question for me to the group. There were 2 responses ­ from...
3 Jun 17, 2010
5:56 am

Kermit Rose
kermit1941
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New Theory. [Non-text portions of this message have been removed]...
2 Jun 15, 2010
7:37 am

Matthew Mutch
mgmutch
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Hello group, just digged up some of my thoughts on the subject: http://tech.groups.yahoo.com/group/primenumbers/message/15715 ...
1 Jun 10, 2010
10:09 pm

Andrey Kulsha
andrey_601
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This method looks ultra slow but new and this conjecture is true in general graphs every method is interesting...
2 Jun 3, 2010
8:02 pm

djbroadhurst
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yes david but differences between these two methods ! for example n = 23 with my method = 23 11 5 2 12 17 8 15 7 3 1 then 2^11-1 = 0 mod 23 I searsh the...
2 Jun 3, 2010
3:17 pm

djbroadhurst
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Won't someone please try this script in my site http://www.1athlet.com the subject of the script is about (conjecture and 2^n-1) please submit a Notice rachid...
2 Jun 2, 2010
11:23 am

djbroadhurst
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It is known that prime twins, quadruplets, sextuplets and octuplets may be symmetrical: 6k + {1} 15k + {2; 4} 15k + {2; 4; 8} 30k + {1; 7; 11; 13},...
4 Jun 1, 2010
2:12 pm

taorres
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    SORRY I send you my blog address that dont anything with primes. I obtained the  Fermat Little Theorem for a=2 using dynamical systems. (there are...
1 May 30, 2010
1:15 pm

Juan Ignacio Casaubon
jicasaubon
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SORRY I send you my blog address that dont anything with primes. I obtained the  Fermat Little Theorem for a=2 using dynamical systems. (there are about...
1 May 30, 2010
1:12 pm

Juan Ignacio Casaubon
jicasaubon
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Well, it is a nearly new file, it is the final version of my book about the Ulam spiral and similar primepatterns. You can find it under visuliazations, called...
1 May 30, 2010
3:52 am

Sren
srentospace
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