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Old 2011-07-21, 12:59   #243
SaneMur
 
Jul 2011

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For k = 11235813, last prime was 161927, tested up to 228328 as of this morning.

It looks like by tomorrow I will reach the 250K mark, which has been sieved through 30T so far for exponents up to 1 M. BY the Prime Number Theorem I should be encountering a prime today, but we all know how that usually goes.

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Old 2011-07-21, 14:10   #244
Thomas11
 
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Quote:
Originally Posted by SaneMur View Post
For k = 11235813, last prime was 161927, tested up to 228328 as of this morning.
Please note, that this thread is for reporting stats on low weight sequences, which typically have Nash weights less than about 500 or so.

The Nash weight of your k is 1990, which I wouldn't call a low weight.

So, keep reporting your status on k=11235813 within the Choose your own K thread.
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Old 2011-09-01, 07:36   #245
Cruelty
 
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k=3343 tested till n= 4.3M
k=6883 tested till n= 3.3M
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Old 2011-11-23, 07:26   #246
Jean Penné
 
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Hello,

I reached to-day n = 6688355, no prime so far, continuing...

The file I am testing is now sieved up to 201 Tera and contains exponents up to
333,000,000

- So, I am now seaching for a prime larger than 2 millions digits base 10 but...

Regards,
Jean
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Old 2011-11-23, 07:53   #247
kar_bon
 
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Quote:
Originally Posted by Jean Penné View Post
Hello,

I reached to-day n = 6688355, no prime so far, continuing...
I assume you meant k=442513453 (Nash=11) because k=442413453 got a Nash-weight of 1841.
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Old 2011-11-23, 09:38   #248
Jean Penné
 
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Quote:
Originally Posted by kar_bon View Post
I assume you meant k=442513453 (Nash=11) because k=442413453 got a Nash-weight of 1841.
Oh yes, indeed, sorry for this typo!
Jean
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Old 2011-11-28, 13:46   #249
Thomas11
 
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k=59493015971 has just reached n=7M.
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Old 2011-11-29, 13:50   #250
Cruelty
 
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k=3343 tested till n= 4.4M
k=6883 tested till n= 3.8M
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Old 2011-12-31, 19:17   #251
Thomas11
 
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k=59493015971 is now fully tested up to n=10M.
I'm stopping there and will take some other (even lower weighted) Ks instead.

If someone (Jean?) want's to take this k further, just feel free to do so!
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Old 2012-01-18, 15:06   #252
Thomas11
 
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I generated a new bunch (a few hundreds) of some extremely low weight Ks, out of which I'm currently processing 55 Ks to n=1M. On average there are only 24 candidates per million to be LLR tested (which is just about 1/3rd of the number of candidates of my former lowest weighted sequence for k=59493015971).

Since the Nash weights (w) are almost zero, I adopted an "extended" Nash weight (w') using a larger interval (n=1-100000 instead of the n=100000-110000 for the default Nash weight).

The following 12 Ks are already done to n=1M (no primes):

Code:
          k             w    w'
-------------------------------
   48339404892961177    1    14
  406073582908236461    1    14
  592979134808991457    2    13
  652850574413930323    2    14
  722628597787516781    1    11
  779459145704090233    0    11
 1120506687783216073    1    15
 1169903532554197841    2    13
 1230093405438569351    0    12
 1453925393534176987    1    11
 1785111313457786563    0    10
 1798192187704866367    1    10
I will report the others once they are finished to n=1M.

Of course, there is a good chance that some of those Ks are actually Riesel numbers. So, the challenge is open to find some unknown covering sets...
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Old 2012-02-10, 09:57   #253
Thomas11
 
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Here comes the remaining part of the 55 extremely low weight Ks.
All tested to n=1M, no primes:

Code:
          k             w    w'
-------------------------------
 1857833492721734399    2    14
 1889973078421276391    2    11
 2134283979496977071    2    14
 2336808081874555027    0    14
 2361395635463628913    1     9
 2382824198781367777    1    14
 2429751258528036643    0     8
 2836914664354991819    1    13
 2906083326630193357    1     7
 2922711893866140097    2    13
 3357318879583504987    1    11
 3590135939982057041    1     9
 3905879503574758663    2    14
 4147838629795642961    0    11
 4150722274592923633    0    11
 4909752721230431699    1    13
 4912819163835060913    1    11
 5234218736802825547    1    13
 5412103969953297493    0    11
 5525169014874395083    0    15
 5676538842682825567    1    12
 6161602957511341897    0    11
 6500156429041023487    1    13
 6637512635665889863    1    11
 6769336298281479701    1    10
 6838389932203592981    0    14
 6976449340148941409    1    11
 7135659833720286523    2    10
 7156629629285559641    2    14
 7247899968266151097    1    11
 7333936375096049413    0     5
 7419486210481787381    1    13
 7493892384027423131    3    11
 7521556265302368389    1     7
 7765247154549407503    1    10
 7792196351147980619    1    12
 7860917433568278179    1    10
 7861962846623813377    1    15
 8089507880965116551    3    10
 8119785642358069297    2    10
 8503602799194836803    1    12
 8510030899264686877    2    15
 8747510320667708377    1     8
As before, w is the standard Nash weight (n=100000-110000) and w' means "extended" Nash weight (for the interval n=1-100000).
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