20110219, 03:23  #1 
"Frank <^>"
Dec 2004
CDP Janesville
2×1,061 Posts 
Team sieve #24: c155 from 4788:2618
After another exciting round of Find The Factors, we now come to a c155 on the very next line after a c172 (so easier, but still not a walk in the park).
22 Feb 2011: Postprocessing has begun! 24 Feb 2011: Postprocessing complete! c155=p72*p84. Next up is a c152 that bchaffin has started sieving. The poly: Code:
n: 75932340428877011727618708726905558562515248304152927449065726063130564403655850880406162753916607273084882142223225126840338325892660195804478997023817401 # norm 4.025205e15 alpha 7.671371 e 2.488e12 rroots 3 skew: 42373826.68 c0: 58398068784506051024477192866875977892800 c1: 167100295795302960137099458278320 c2: 511004049252803790191305716 c3: 13968245979099022648 c4: 357816499243 c5: 996 Y0: 2379225273126981752554350978483 Y1: 158202809821186829 rlim: 25000000 alim: 25000000 lpbr: 29 lpba: 29 mfbr: 58 mfba: 58 rlambda: 2.5 alambda: 2.5 Postprocessing will be done by bchaffin. Sieve reservations: Code:
2040 bchaffin 4042 jrk 4250 bchaffin 5060 bchaffin Last fiddled with by MiniGeek on 20110225 at 02:43 Reason: updating 
20110220, 02:26  #2  
Sep 2010
Portland, OR
101110001_{2} Posts 
Quote:
I can do the postprocessing for this one. Alone, the sieving will take me about 3 days or a little more, so I'm OK to do it on my own. If others want to sieve as well and upload to sendspace, we can have the answer sooner. For now I'll work on 20M40M. 

20110220, 02:32  #3  
Sep 2008
Kansas
BAD_{16} Posts 
Quote:
RichD. 

20110220, 02:47  #4 
May 2008
447_{16} Posts 
From past experience, we want about 57M raw relations (before discarding dups) for a task this size using these parameters. Testing 1/2000 of the specialq's (a test range of 1000 for each 2M range) would yield about 28500 relations (1/2000 of 57M) from the sample ranges over which we'll need to sieve.

20110220, 02:49  #5 
May 2008
3×5×73 Posts 

20110220, 02:59  #6  
Sep 2008
Kansas
7^{2}×61 Posts 
Quote:
Thank you for the reply. I'm still working my way through SIQS and such, but looking ahead into GNFS. RichD. 

20110220, 05:24  #7 
"Frank <^>"
Dec 2004
CDP Janesville
2·1,061 Posts 
I went ahead and changed the ECM thread to an NFS thread; hope that was OK.

20110220, 06:03  #8 
Oct 2004
Austria
2·17·73 Posts 
100 ECM curves at B1=11e7, no factor. (these have been running overnight.)

20110220, 08:51  #9 
Sep 2004
2830_{10} Posts 
60@850M, no factor (these have been running overnight)

20110220, 10:27  #10 
Oct 2006
Berlin, Germany
2^{3}·71 Posts 
Are there some more ECM curves needed, I can run them in yoyo@home?
Which is the number to factor and which are the curves required for different B1 values? yoyo 
20110220, 10:55  #11  
Oct 2004
Austria
2×17×73 Posts 
Quote:
I am sure the next composite which needs some ECM will be here soon. 

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