Choose your own K and work on finding a top-5000 prime! - Page 20

kar_bon · 2008-07-25, 12:44

yes, sorry.
i wrote the post before uploading the files.
i got no response from www.rieselprime.org (today too) so i uploaded now all data-files to www.rieselprime.de.
please refer there for now.

nuggetprime · 2008-07-28, 13:03

At 415k so far. no new primes.

--nuggetprime

kar_bon · 2008-07-30, 13:00

Quote:

Originally Posted by kar_bon

yes, sorry.
i wrote the post before uploading the files.
i got no response from www.rieselprime.org (today too) so i uploaded now all data-files to www.rieselprime.de.
please refer there for now.

today i uploaded all changed files to www.rieselprime.org without any problems so please refer to this.

i included all data for 1001<=k<=1999 and 10k<=n<=35k into the summary pages (data from henryzz and me).

data for many k's (from 20000 to 200000 and mostly n<=10k) from lavalamp will follow.

nuggetprime · 2008-08-02, 21:15

At 500k(no new primes). pausing primesearch now a bit and try a few factorizations.

--nugget

sps27 · 2008-08-09, 05:07

35779 tested to 600k now... one new prime found:

346735

VBCurtis · 2008-12-12, 17:36

k=443 tested to 1040k. No primes, alas.
-Curtis

Vato · 2009-01-12, 10:04

Was thinking of having a go at k=15431 if it's free - can't see any signs of it having been heavily done before?

Also, I'm a bit of newbie about doing all of this by hand, and the previous howtos refer to NewPGen - is there a more recent howto that covers srsieve variants?

Thanks,

\/ato

Kosmaj · 2009-01-12, 12:41

Welcome to RPS!

You are right, nobody did k=15431 before. It's yours!

It's the best to start sieving using NewPGen, upto p=50 or 100bn, and then to switch to srsieve. Suppose that your NewPGen output file is called "15431.txt", then you can start srsieve on the command line as follows:
> sr1sieve -i 15431.txt -o 15431.txt -P 3E12

It will sieve to 3T but you can stop it earlier if you want.

Happy hunting!

lavalamp · 2009-01-13, 00:14

Personally I now start sieving with srsieve, then move onto sr1sieve. This is because NewPGen misses factors and is no longer being actively developed.

If you're on windows, you could put these commands in a batch file and run it to create a sieve:

Code:

srsieve -v -g -m 4e15 -P 1e10 -n 0 -N 101419 "15431*2^n-1"

ren "t17_b2_k15431.npg" "15431_sieve.txt"

pause

That command will sieve 15431*2^n-1 for n up to 101,419 which is an Intel CPU FFT jump point. If you have an AMD CPU under the hood, you might want to change that to 102,919 for the corresponding AMD jump point. It will sieve to a depth of 10 billion, at which point I would recommend switching to sr1sieve.

The ren command simply renames the output file to something more friendly, and the pause command holds the batch file window open when it's done so that you can read any output.

If you want to know what all of the other switches in that command line do, just run srsieve -h, and likewise sr1sieve -h for sr1sieve.

Sieving and LLRing a k up to n=101,419 (or n=102,919) will take maybe 1 - 2 weeks *, depending on how fast your CPU is and how many candidates are removed while sieving.

To get those jump points I used llrtools.

* completely wild guess

Happy5214 · 2009-01-15, 22:11

OK, I'll take over k=10544249 until 1M.

Personally, I also use srsieve, so...

-Alexander Jones

Dougal · 2009-01-29, 20:27

taking 20934375

2008-07-28, 13:03	#211
nuggetprime Mar 2007 Austria 2·151 Posts	1443 At 415k so far. no new primes. --nuggetprime

2008-08-02, 21:15	#213
nuggetprime Mar 2007 Austria 302₁₀ Posts	1443 At 500k(no new primes). pausing primesearch now a bit and try a few factorizations. --nugget

2009-01-12, 10:04	#216
Vato Jan 2009 14₁₆ Posts	k=15431 & newbie stuff Was thinking of having a go at k=15431 if it's free - can't see any signs of it having been heavily done before? Also, I'm a bit of newbie about doing all of this by hand, and the previous howtos refer to NewPGen - is there a more recent howto that covers srsieve variants? Thanks, \/ato

2009-01-12, 12:41	#217
Kosmaj Nov 2003 2×1,811 Posts	Vato Welcome to RPS! You are right, nobody did k=15431 before. It's yours! It's the best to start sieving using NewPGen, upto p=50 or 100bn, and then to switch to srsieve. Suppose that your NewPGen output file is called "15431.txt", then you can start srsieve on the command line as follows: > sr1sieve -i 15431.txt -o 15431.txt -P 3E12 It will sieve to 3T but you can stop it earlier if you want. Happy hunting!

2009-01-13, 00:14	#218
lavalamp Oct 2007 Manchester, UK 5×271 Posts	Personally I now start sieving with srsieve, then move onto sr1sieve. This is because NewPGen misses factors and is no longer being actively developed. If you're on windows, you could put these commands in a batch file and run it to create a sieve: Code: srsieve -v -g -m 4e15 -P 1e10 -n 0 -N 101419 "154312^n-1" ren "t17_b2_k15431.npg" "15431_sieve.txt" pause That command will sieve 154312^n-1 for n up to 101,419 which is an Intel CPU FFT jump point. If you have an AMD CPU under the hood, you might want to change that to 102,919 for the corresponding AMD jump point. It will sieve to a depth of 10 billion, at which point I would recommend switching to sr1sieve. The ren command simply renames the output file to something more friendly, and the pause command holds the batch file window open when it's done so that you can read any output. If you want to know what all of the other switches in that command line do, just run srsieve -h, and likewise sr1sieve -h for sr1sieve. Sieving and LLRing a k up to n=101,419 (or n=102,919) will take maybe 1 - 2 weeks , depending on how fast your CPU is and how many candidates are removed while sieving. To get those jump points I used llrtools. completely wild guess

2008-07-25, 12:44	#210
kar_bon Mar 2006 Germany 2³×3×11² Posts	yes, sorry. i wrote the post before uploading the files. i got no response from www.rieselprime.org (today too) so i uploaded now all data-files to www.rieselprime.de. please refer there for now.

2008-08-09, 05:07	#214
sps27 Jul 2008 MA, USA 8₁₀ Posts	35779 tested to 600k now... one new prime found: 346735

2008-12-12, 17:36	#215
VBCurtis "Curtis" Feb 2005 Riverside, CA 4,861 Posts	k=443 tested to 1040k. No primes, alas. -Curtis

2009-01-15, 22:11	#219
Happy5214 "Alexander" Nov 2008 The Alamo City 2⁴×43 Posts	New k OK, I'll take over k=10544249 until 1M. Personally, I also use srsieve, so... -Alexander Jones

2009-01-29, 20:27	#220
Dougal Jan 2009 Ireland 2·3·31 Posts	taking 20934375

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