mersenneforum.org I found some primes, what should I do next?
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 2005-04-15, 10:12 #1 gribozavr     Mar 2005 Internet; Ukraine, Kiev 19716 Posts I found some primes, what should I do next? I've done sieving and LLR'ing 15k=187466565 with n from 1 to 100000 and 100000 to 150000 is in progress and I've found some primes. There are many small primes, e.g. n={7,8,11...} as well as some bigger ones, up to ~27000 digits long. So, what shold I do next? http://mersenneforum.org/showthread.php?t=640 says "submit them to http://primes.utm.edu/primes/submit.php", but how do I get the "prover id"? There are also "POST PRIMES you've found here..." and "Post small primes..." threads lying around What primes are considered "small"? Please, help me to sumbit primes and get credit for them as I'm very confused with all those instructions lying around here...
2005-04-15, 11:00   #2
Washuu

Mar 2005
Poland

5·7 Posts

Quote:
 Originally Posted by gribozavr I've done sieving and LLR'ing 15k=187466565 with n from 1 to 100000 and 100000 to 150000 is in progress and I've found some primes. There are many small primes, e.g. n={7,8,11...} as well as some bigger ones, up to ~27000 digits long.
IMO you can post your primes to "top5000" list only if your primes are at least 56000 digits long, unless they have some "special form". "Special form" is NOT k*b^n+c, but I may be wrong...

Length of k*b^n primes can be calculated as length=log10(b)*n+k.

But keep searching!

 2005-04-15, 15:02 #3 Washuu   Mar 2005 Poland 5×7 Posts EDIT: length=log10(b)*n+log10(k)=n*log10(b)+log10(k) of course. I should think twice before "submit" button...
2005-04-15, 15:16   #4
gribozavr

Mar 2005
Internet; Ukraine, Kiev

11×37 Posts

Quote:
 Originally Posted by Washuu IMO you can post your primes to "top5000" list only if your primes are at least 56000 digits long, unless they have some "special form". "Special form" is NOT k*b^n+c, but I may be wrong...
Yes, but I didn't mean top5000, I meant the prime database in general. From http://primes.utm.edu/primes/search.php:
Quote:
 You may also restrict the primes selected by specifying a minimum and/or maximum number of digits. Since all primes in this database have at least 1000 digits, smaller minimums would be meaningless.
So, the primes found by me can be added to the database.
There also exists http://15k.org/stats.htm -- main 15k status page, where all primes found are listed.

PS: Thanks for the formula!

 2005-04-17, 00:55 #5 Kosmaj     Nov 2003 2×1,811 Posts The "prime data base in general" contains many primes found in the last 10 years or more, but only those that can make in the Top-5000 now can be reported (except some special forms). Currently, the 5000th prime in the data base has 56600 digits so your prime has to have more. The limit changes with new submissions and can be checked here. The smaller primes you can report to the Post small primes thread, and they will be later included in the 15k stats. Good luck!
 2005-04-17, 08:59 #6 gribozavr     Mar 2005 Internet; Ukraine, Kiev 11·37 Posts Thanks, Kosmaj! That is exactly what I wanted to know. I'll report primes I've found and will keep on searching!

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