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-   -   Nicely done PrimeGrid - Record Woodall Prime (https://www.mersenneforum.org/showthread.php?t=8964)

axn 2007-08-09 12:56

Nicely done PrimeGrid - Record Woodall Prime
 
Lookie [URL="http://primes.utm.edu/primes/page.php?id=81907"]here[/URL]

ValerieVonck 2007-08-09 13:56

congrats to Primegrid & the finder - w00t first post

rogue 2007-08-09 15:40

Wow! That makes three Woodalls in one year (actually less than 1 year), although this is the first Woodall found by PrimeGrid. Now if they could only find the next Cullen...

BTW, this thread should probably be moved to the Prime Cullen Prime project area.

Is there a page on PrimeGrid that gives the current search status for Cullens and/or Woodalls?

axn 2007-08-09 17:14

[QUOTE=rogue;112058]Is there a page on PrimeGrid that gives the current search status for Cullens and/or Woodalls?[/QUOTE]

Not quite what you are looking for, but [URL="http://www.primegrid.com/"]here[/URL] and [URL="http://www.primegrid.com/range_grid.php"]here[/URL] will give you /some/ stats.

The front page (first URL) top section shows "Available" tests. The second page shows rangewise split (3rd line from the top and last two lines at the bottom), though it is not obvious whether it is cullen, woodall or both :ermm:

rogue 2007-08-09 17:31

[QUOTE=axn1;112064]The front page (first URL) top section shows "Available" tests. The second page shows rangewise split (3rd line from the top and last two lines at the bottom), though it is not obvious whether it is cullen, woodall or both :ermm:[/QUOTE]

Exactly my point. Maybe I'm expecting too much, but I think that the stats for the Sierinski/Riesel base 5 project are easier to understand.

Rytis 2007-08-09 17:47

Thanks for the greetings :)

Currently we are not running any Cullen work. We hope to start with Cullens in the end of next week. I also have plans to improve statistics - the page was meant for TPS, and was only slightly adapted to show C/W, too. The limiting factor is time...

jasong 2007-08-09 21:39

251749 ยท 2^2013995-1

The above is the number listed on the page. I was confused at first, since a Woodall is supposed to be n*2^n-1, but then I got out my calculator and found the equivalent equation 2013992*2^2013992-1.

axn 2007-09-03 08:48

Another one found, as hinted [URL="http://www.primegrid.com/"]here[/URL] and [URL="http://www.mersenneforum.org/showpost.php?p=113421&postcount=29"]reported here[/URL].

Currently undergoing verification, slotting in at #25 on Top 5000 list. The proper form is 2367906*2^2367906-1.

Will the next one be a megadigit prime?


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