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Old 2013-04-01, 18:54   #1
Antonio
 
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Default K=2357

After some idle minutes spent looking at http://www.rieselprime.de/ I decided to extend the search from the recorded 600K up to 1M for 2357*2^n-1.

I did a double check of the values recorded in the database, as a check on my method and software, and confirmed the recorded prime list as complete and correct.

I am currently extending the search using:-

newPgen version 2.82
sr1sieve version 1.4.3 (windows 64bit)
LLR version 3.8.9 (windows 64bit console)

Running LLR currently at 739K with 2 new primes found (not big enough for the top 5000 yet):

n=658164
n=708038

At the same time I am sieving the range 1M to 10M, the aim being to have this range sieved as much as possible when the current LLR run completes.

I may then continue testing the next million (at least).
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Old 2013-04-02, 04:05   #2
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New prime found:-

n=745208
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Old 2013-04-02, 07:20   #3
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See here for already sieved files.

I've updated this k on my page (not yet last found prime).
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Old 2013-04-02, 09:42   #4
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Quote:
Originally Posted by kar_bon View Post
See here for already sieved files.

I've updated this k on my page (not yet last found prime).

Thanks for the info...but those zipped files are huge!
My current file for n>1M to 10M is only 225kB when zipped.
(sr1sieved to 6,747,050,457,269 so far)

How far are the ranges sieved to?
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Old 2013-04-02, 09:49   #5
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Quote:
Originally Posted by Antonio View Post
Thanks for the info...but those zipped files are huge!
My current file for n>1M to 10M is only 225kB when zipped.
(sr1sieved to 6,747,050,457,269 so far)

How far are the ranges sieved to?
I did not look inside the files, but at http://home.comcast.net/~jimb_primegrid/rsp/ the files 4,5,6M seem to be at 274P (that is, 40,000 times your current limit).
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Old 2013-04-02, 10:43   #6
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Quote:
Originally Posted by Antonio View Post
Thanks for the info...but those zipped files are huge!
The rps2M-file for example contains all k-values from k=1 to 9999 for n=1M to 2M, that's why they are so huge.

The file I'm just looking at (rsp2M_20110731.7z, downloaded some time ago) contains 17879 candidates for k=2357 for n=1000004 to 1999984.

The file is in abcd-format (555 MB), use srfile to convert to npg-format.

Last fiddled with by kar_bon on 2013-04-02 at 10:49
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Old 2013-04-02, 10:50   #7
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Quote:
Originally Posted by Antonio View Post
Thanks for the info...but those zipped files are huge!
My current file for n>1M to 10M is only 225kB when zipped.
(sr1sieved to 6,747,050,457,269 so far)

How far are the ranges sieved to?
The attched file contains the sieve file for k=2357, n=0-3M, as extracted from the PrimeGrid files. I'm not sure about the actual sieve limit, but it was something around p=150P. (The indicated sieve limit within the sieve file isn't correct - it's just a dummy value.)

The ranges n=3M-6M and n=6M-9M are still in progress, and I haven't downloaded them yet. Let me (or us) know once you need them...
Attached Files
File Type: zip k2357.zip (143.5 KB, 46 views)
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Old 2013-04-02, 10:57   #8
Antonio
 
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Quote:
Originally Posted by kar_bon View Post
The rps2M-file for example contains all k-values from k=1 to 9999 for n=1M to 2M, that's why they are so huge.

The file I'm just looking at (rsp2M_20110731.7z, downloaded some time ago) contains 17879 candidates for k=2357 for n=1000004 to 1999984.

The file is in abcd-format (555 MB), use srfile to convert to npg-format.
Thanks for the info. I downloaded the RSP2M file and unzipped it, unfortunately none of my text editors can cope with the file size for me to extract the portion I need.
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Old 2013-04-02, 10:59   #9
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Quote:
Originally Posted by Antonio View Post
Thanks for the info. I downloaded the RSP2M file and unzipped it, unfortunately none of my text editors can cope with the file size for me to extract the portion I need.
Use
srfile -g rsp2M_20110731.abcd
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Old 2013-04-02, 11:01   #10
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Quote:
Originally Posted by Thomas11 View Post
The attched file contains the sieve file for k=2357, n=0-3M, as extracted from the PrimeGrid files. I'm not sure about the actual sieve limit, but it was something around p=150P. (The indicated sieve limit within the sieve file isn't correct - it's just a dummy value.)

The ranges n=3M-6M and n=6M-9M are still in progress, and I haven't downloaded them yet. Let me (or us) know once you need them...

Thanks very much, downloaded and will be put to work in the next 24 hours
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Old 2013-04-02, 11:21   #11
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Quote:
Originally Posted by kar_bon View Post
Use
srfile -g rsp2M_20110731.abcd
Yes, that worked, thanks. Looks like it contains the same number of terms as the file provided by Thomas11 (over the same range) so I'm spoilt for choice now

Thanks again to both of you
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