20080728, 07:43  #1 
May 2007
Kansas; USA
5^{2}×421 Posts 
Sierp base 3  minidrive Ia
We have started a mini drive for Sierp base 3. The range is k<50M and n=35K100K.
There were 154 k's remaining to begin with. The drive found 81 k's with primes so there are now 73 k's remaining for this krange. This is a very lowintensity drive. The files are small and you should be able to complete files at the current nrange in 47 days. Feel free to grab several if you like. As we find primes, like I did with primes that were previously found, we'll remove k's from files for larger nranges. Files up to n=100K are fully sieved to P=175G. Primes found: Code:
prime found by 23243282*3^99009+1 Flatlander 29548672*3^96142+1 Flatlander 35382962*3^93533+1 Flatlander 48652642*3^92392+1 Flatlander 39809884*3^91905+1 Flatlander 28071866*3^91455+1 Flatlander 26261252*3^91020+1 Flatlander 30440162*3^90938+1 Flatlander 40809266*3^89759+1 Flatlander 9690724*3^87558+1 Flatlander 44249222*3^85781+1 henryzz 21175348*3^84575+1 em99010pepe 7111766*3^84512+1 em99010pepe 41118464*3^82674+1 em99010pepe 8090242*3^81633+1 em99010pepe 47214478*3^80452+1 em99010pepe 36173524*3^78327+1 em99010pepe 16693364*3^77129+1 em99010pepe 39834376*3^76224+1 nuggetprime 25207316*3^76109+1 nuggetprime 29450654*3^76010+1 nuggetprime 26393956*3^75239+1 nuggetprime 42497116*3^75136+1 nuggetprime 46490116*3^74892+1 nuggetprime 9240646*3^74356+1 nuggetprime 29348458*3^71822+1 michaf 9483244*3^65267+1 michaf 11242904*3^64614+1 michaf 42216418*3^64227+1 michaf 10224166*3^59777+1 em99010pepe 14994106*3^57376+1 em99010pepe 3938414*3^56779+1 em99010pepe 34960988*3^56350+1 em99010pepe 20856328*3^56338+1 em99010pepe 46511144*3^56138+1 em99010pepe 28964426*3^52608+1 em99010pepe 24925372*3^51893+1 em99010pepe 40316644*3^51786+1 em99010pepe 6859514*3^51502+1 em99010pepe 48886226*3^51212+1 em99010pepe 11785058*3^50252+1 em99010pepe 6123394*3^49821+1 em99010pepe 24763868*3^49675+1 em99010pepe 41443828*3^49528+1 em99010pepe 35164256*3^47916+1 em99010pepe 48563402*3^47888+1 em99010pepe 15895156*3^47532+1 em99010pepe 12087826*3^47344+1 em99010pepe 48501008*3^46896+1 em99010pepe 5574644*3^46587+1 em99010pepe 8828234*3^46265+1 em99010pepe 15396762*3^46233+1 em99010pepe 24725744*3^46211+1 em99010pepe 10504636*3^46184+1 em99010pepe 38804354*3^45875+1 em99010pepe 37160146*3^45496+1 em99010pepe 37158138*3^45035+1 em99010pepe 30237632*3^44437+1 em99010pepe 19947516*3^44420+1 em99010pepe 40677134*3^43415+1 em99010pepe 29772794*3^43415+1 em99010pepe 23862908*3^42999+1 em99010pepe 14892316*3^42972+1 em99010pepe 12203572*3^42792+1 em99010pepe 19450274*3^41878+1 Lennart 20258534*3^41706+1 Lennart 27704962*3^41561+1 Lennart 25095394*3^41459+1 Lennart 16939082*3^40745+1 Lennart 23727272*3^40665+1 Lennart 47807146*3^39904+1 Lennart 30032708*3^39872+1 Lennart 20436272*3^38146+1 CedricVonck 30494864*3^37165+1 MiniGeek 26804972*3^36314+1 henryzz 14454556*3^36283+1 henryzz 11658664*3^35879+1 CedricVonck 32565374*3^35794+1 CedricVonck 28675334*3^35458+1 CedricVonck 38353046*3^35109+1 CedricVonck 12562406*3^35092+1 CedricVonck Code:
range tested by status # primes 86K100K Flatlander complete 10 85K86K henryzz complete 1 77K85K em99010pepe complete 7 73K77K nuggetprime complete 7 67K73K michaf complete 1 66K67K nuggetprime complete 0 64K66K michaf complete 3 63K64K mdettweiler complete 0 62K63K michaf complete 0 42K62K em99010pepe complete 35 39K42K Lennart complete 8 38K39K CedricVonck complete 1 37K38K MiniGeek complete 1 36K37K henryzz complete 2 35K36K CedricVonck complete 5 Have fun and knock out a bunch of k's! Gary Last fiddled with by gd_barnes on 20090930 at 18:47 Reason: update status 
20080728, 12:59  #2 
Mar 2004
Belgium
1511_{8} Posts 
reserving : 35K36K

20080728, 13:08  #3 
Just call me Henry
"David"
Sep 2007
Cambridge (GMT/BST)
2·3^{2}·7·47 Posts 
reserving : 36K37K

20080728, 15:51  #4 
Mar 2004
Belgium
29^{2} Posts 
Two primes found:
12562406 35092 38353046 35109 Do I have to remove these k's (12562406 & 38353046 )from imy nput file? 
20080728, 16:06  #5 
Account Deleted
"Tim Sorbera"
Aug 2006
San Antonio, TX USA
3·1,423 Posts 
Taking 37K38K. Removing the two k's that Cedric found primes for.
This is mainly to balance the amount of work on my NPLB 530.0530.6 range between my cores. For some reason, 530.3530.6 has way more pairs to test that 530.0530.3 did, and I'd like to find a few small primes anyway. Edit: If I find a PRP with this, should I just report it here as a PRP or check it first? Either way, how do I check it for 100% certain primality instead of just PRP? Last fiddled with by MiniGeek on 20080728 at 16:24 
20080728, 17:01  #6  
Just call me Henry
"David"
Sep 2007
Cambridge (GMT/BST)
2·3^{2}·7·47 Posts 
Quote:
the options t tp and tc all prove primality 

20080728, 21:11  #7 
A Sunny Moo
Aug 2007
USA (GMT5)
3×2,083 Posts 
Yes, remove them (though if it's too much of a hassle, don't worry about it). Just a little warning, though: after you've removed the k's from the input file, make sure you adjust the current line being processed as stored in llr.iniotherwise, you'll end up skipping a whole chunk of the file.

20080728, 21:31  #8  
May 2007
Kansas; USA
291D_{16} Posts 
Quote:
You would use the t option for +1 tests. tp is for 1 tests. tc tests both but is generally used for random forms (i.e. k*b^n+7) and would take an unnecessary amount of time for +1 or 1 tests. Gary 

20080728, 21:34  #9  
May 2007
Kansas; USA
5^{2}×421 Posts 
Quote:
At this low nrange with so many k's remaining, I wouldn't even mess with removing them from your current file. Removing 2 out of 154 k's will only save you about 2 / 154 = 1.3% CPU time. I'll get them removed from the n>38K files later today. Gary Last fiddled with by gd_barnes on 20080728 at 21:42 

20080728, 21:41  #10 
Account Deleted
"Tim Sorbera"
Aug 2006
San Antonio, TX USA
3×1,423 Posts 
30494864*3^37165+1 is prime! (from PFGW, so this is verified)
Removing from my file... I used t. It only took 10 seconds longer than it took to PRP it (~41 vs ~31). Edit: Is there any existing tool to more easily remove a k from an LLRformatted file? I'm not worried about the line number, as I could manually clear out the ones I've finished and restart it on line 1, but the new line number you need to run on would be nice too. Last fiddled with by MiniGeek on 20080728 at 21:44 
20080728, 23:13  #11  
Account Deleted
"Tim Sorbera"
Aug 2006
San Antonio, TX USA
1000010101101_{2} Posts 
Quote:


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