mersenneforum.org RPS 11th Drive: Search for more megabit primes
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 2013-08-27, 23:24 #155 Kosmaj     Nov 2003 2×1,811 Posts I vote for the reduction of Ks to 12 selected by Thomas. We can stop the current drive at n=1025k, and continue with only 12 Ks. However, with the current selection we are dropping the most prolific k=2049 which so far produced 8 primes. Here is the list of Ks with the number of primes found so far: Code: k w #p 2289 3107 2 2061 3124 1 2271 3180 4 2079 3221 6 2085 3345 0 added at 1010k 2127 3437 4 2259 3437 0 2253 3507 7 2205 3532 0 2103 3935 3 2043 4049 4 2211 4509 2 2049 2853 8 How about replacing k=2259 (or k=2205) with k=2049? Last fiddled with by Thomas11 on 2013-08-28 at 07:26 Reason: Added the Nash weight for k=2049
 2013-08-28, 05:24 #156 Kosmaj     Nov 2003 1110001001102 Posts We can also just add k=2049 and continue with 13 Ks. Of course we can also forget about k=2049 on the grounds that already many primes were found, and there won't be any more soon, but other prolific Ks (like k=6555 in the 8th Drive) suggest that it's not so.
 2013-08-28, 06:54 #157 VBCurtis     "Curtis" Feb 2005 Riverside, CA 22×23×47 Posts I'm a fan of the 13-k's choice, for one reason additional to the ones listed already: I, and anyone else who thinks like me, can adopt a couple of the abandoned k's to get them to 1200 and "safe". I've just picked up a couple more cores on campus, so I could move some ranges around and run this at home this fall. Conveniently for me, Lennart's press to 1025 buys me a bit of room to move if ya'll shrink the drive. Thanks!
2013-08-28, 07:31   #158
Thomas11

Feb 2003

3×5×127 Posts

Quote:
 Originally Posted by VBCurtis I, and anyone else who thinks like me, can adopt a couple of the abandoned k's to get them to 1200 and "safe".
I had similar thoughts. For example someone might consider to pick one or a few of the low weights (the lowest ones are given below). These could be easily driven to n=2M.

Code:
k    w
2263 251
2279 261
2171 284
2039 311
2017 378
2291 434
2167 456
2287 472

 2013-08-28, 07:35 #159 Thomas11     Feb 2003 111011100012 Posts Just one additional thought: In my opinion we should start a new thread for the 13 Ks drive (= "The new 11th drive" or perhaps "The 12th drive"), and keep the current one for those individual reservations as suggested by Curtis.
 2013-08-28, 08:00 #160 Kosmaj     Nov 2003 2×1,811 Posts Hi Thomas, Yes, let's start the 12th Drive, and officially close this one at 1025k. Of course, individuals can keep on testing remaining Ks.
2013-08-28, 11:26   #161
Thomas11

Feb 2003

77116 Posts

Quote:
 Originally Posted by Kosmaj Yes, let's start the 12th Drive, and officially close this one at 1025k. Of course, individuals can keep on testing remaining Ks.
The 12th Drive featuring the 13 high weight Ks has been officially started!

All remaining 113 Ks are now open for individual testing.

 2013-08-29, 13:29 #162 Lennart     "Lennart" Jun 2007 25·5·7 Posts Taking k 2263 Lennart
2013-08-30, 09:11   #163
Lennart

"Lennart"
Jun 2007

25×5×7 Posts

2263 complete to 2M released

No primes
Attached Files
 k2263-2M.log.zip (77.8 KB, 43 views)

Last fiddled with by Lennart on 2013-08-30 at 09:12

 2013-08-30, 12:28 #164 Thomas11     Feb 2003 3·5·127 Posts 1020-1021 finally completed, no primes.
 2013-08-31, 20:51 #165 Thomas11     Feb 2003 35618 Posts Taking k=2279.

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