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

 mdettweiler 2010-09-08 03:22

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.

 mdettweiler 2010-09-09 15:13

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.

 Oddball 2010-09-30 22:02

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.

 Oddball 2010-10-07 22:08

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.

 MooMoo2 2010-11-18 08:16

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.

[URL]http://primes.utm.edu/primes/page.php?id=85273[/URL]
...so I wonder whether he checked it for twins when he found it.

 mdettweiler 2010-11-18 08:21

[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.

[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.

 TimSorbet 2010-11-18 11:47

[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)

 MooMoo2 2010-12-01 05:53

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.

 Oddball 2010-12-01 07:16

[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.

 cipher 2011-01-07 16:29

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.

 mdettweiler 2011-01-07 20:42

[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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