December 13th, 2014, 01:09 PM  #1 
Senior Member Joined: Nov 2013 From: Germany Posts: 179 Thanks: 1 Math Focus: Number Theory  Twin prime formulas ?!
((y^2x^2)^n+x (xy)^n+y (xy)^n)/((xy) (x+y)) = 4^(n) (x^2y^2)^n n out of N The system gives some twin prime solutions for x,y Where can i find better ones? Thx 
December 13th, 2014, 02:46 PM  #2 
Senior Member Joined: Aug 2008 From: Blacksburg VA USA Posts: 353 Thanks: 7 Math Focus: primes of course 
seems like overkill. From OEIS A014574 comments, TP pairs can be found from centers n where sigma(n1)=phi(n+1). An example is 1260768 yielding (1260767,1260769). Pari and other programs have those functions (for Pari, sigma, eulerphi)


Tags 
formulas, prime, twin 
Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
Twin prime : can we prove?  mobel  Number Theory  10  January 22nd, 2014 09:57 AM 
Twin Prime progress  billymac00  Number Theory  38  December 21st, 2013 08:29 AM 
Twin Prime Generator  chibeardan  New Users  7  May 26th, 2013 06:39 PM 
Even numbers and twin prime  Bogauss  Number Theory  7  February 23rd, 2012 11:52 AM 
Twin Prime Conjecture  Macky  Number Theory  8  September 28th, 2010 11:39 AM 