- **Twin Prime Search**
(*https://www.mersenneforum.org/forumdisplay.php?f=65*)

- - **List of variable-n primes found**
(*https://www.mersenneforum.org/showthread.php?t=13831*)

Another prime from Lennart showed up just now:
user=sm5ymt [2010-09-07 21:54:23] 62025*2^481119-1 is prime! Time : 0.0 sec. 62025*2^481119+1 is not prime. Proth RES64: 8073F46794582A83 Time : 651.473 sec. |

user=sm5ymt
[2010-09-09 06:13:33] 31581*2^481175-1 is prime! Time : 0.0 sec. 31581*2^481175+1 is not prime. Proth RES64: CE644B20D47D2CC1 Time : 547.476 sec. |

I just found my first >100,000 digit prime, but it wasn't twin:
27783*2^484996-1 is prime! Time : 269.540 sec. 27783*2^484996+1 is not prime. Proth RES64: 91D053B67EE74A16 Time : 338.358 sec. |

Another week gone, another (non-twin) prime found:
3981*2^481407-1 is prime! Time : 266.708 sec. 3981*2^481407+1 is not prime. Proth RES64: 57B9EC8819DED68D Time : 334.886 sec. It's my second large prime and TPS's tenth. |

I found a prime through PRPnet, but it wasn't twin:
4035*2^481460-1 is prime! Time : 266.302 sec. 4035*2^481460+1 is not prime. Proth RES64: 3666DAD2B7AB7854 Time : 334.954 sec. Also, this prime had already been found earlier... [URL]http://primes.utm.edu/primes/page.php?id=85273[/URL] ...so I wonder whether he checked it for twins when he found it. |

[QUOTE=MooMoo2;237597]I found a prime through PRPnet, but it wasn't twin:
4035*2^481460-1 is prime! Time : 266.302 sec. 4035*2^481460+1 is not prime. Proth RES64: 3666DAD2B7AB7854 Time : 334.954 sec. Also, this prime had already been found earlier... [URL]http://primes.utm.edu/primes/page.php?id=85273[/URL] ...so I wonder whether he checked it for twins when he found it.[/QUOTE] Most likely the original finder hadn't checked it, but since it's listed at [URL]http://www.rieselprime.de/[/URL], it would have been included with [url=http://www.mersenneforum.org/showthread.php?t=13382]this effort[/url] which checked all primes on that list for twins as of 2010-05-07, and then updated that check (finished yesterday, in fact) to include new primes as of 2010-10-06. |

[QUOTE=mdettweiler;237599]Most likely the original finder hadn't checked it, but since it's listed at [URL]http://www.rieselprime.de/[/URL], it would have been included with [url=http://www.mersenneforum.org/showthread.php?t=13382]this effort[/url] which checked all primes on that list for twins as of 2010-05-07, and then updated that check (finished yesterday, in fact) to include new primes as of 2010-10-06.[/QUOTE]
Indeed, from my result files: 4035*2^481460+1 is not prime. Proth RES64: 3666DAD2B7AB7854 Time : 360.105 sec. (the residues match) |

I found 3 primes over the past two days. One of them was previously discovered ([URL]http://primes.utm.edu/primes/page.php?id=87031[/URL] ), and none of them were twin:
1623*2^481564-1 is prime! Time : 196.590 sec. 1623*2^481564+1 is not prime. Proth RES64: 5B6D67B9B4648D0E Time : 203.501 sec. 17691*2^481579-1 is prime! Time : 266.008 sec. 17691*2^481579+1 is not prime. Proth RES64: 5972440ED6730B0F Time : 334.202 sec. 25515*2^481628-1 is prime! Time : 266.868 sec. 25515*2^481628+1 is not prime. Proth RES64: 772C733BAB69E8D5 Time : 335.950 sec. I'm now the luckiest TPS searcher with 4 primes found in less than 7400 tests. |

[QUOTE=MooMoo2;239440]I'm now the luckiest TPS searcher with 4 primes found in less than 7400 tests.[/QUOTE]
The luckiest TPS searcher is the one who finds the twin :smile: On another note, the first post has been changed to show all TPS primes in order of k, not just in order of n. |

First Prime for me Woot Woot!!! :showoff::showoff::showoff:
Primes found today: user=cipher [2011-01-07 04:17:50] 39075*2^481855-1 is prime! Time : 0.0 sec. "I need some help submitting it, can anyone post there primes.utm.edu page so i can make sure i can give proper credits" Thanks. cipher. |

[QUOTE=cipher;244958]First Prime for me Woot Woot!!! :showoff::showoff::showoff:
Primes found today: user=cipher [2011-01-07 04:17:50] 39075*2^481855-1 is prime! Time : 0.0 sec. "I need some help submitting it, can anyone post there primes.utm.edu page so i can make sure i can give proper credits" Thanks. cipher.[/QUOTE] These primes are too small for the "regular" top-5000 rankings; you only need to submit primes if they turn out to be twin. Note that the +1 counterpart needs to be tested separately to see if it is a twin. You can do this yourself, or Oddball will do it along with a separate doublecheck of the prime itself (both to be listed in the second post of this thread). Meanwhile, though....congratulations! :smile: [B]Oddball: Just finished checking the prime and its +1 counterpart. It wasn't a twin. :sad:[/B] |

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