20121026, 08:02  #1992 
May 2008
3·5·73 Posts 
I've started polynomial selection.

20121026, 08:08  #1993 
Feb 2005
The Netherlands
218_{10} Posts 

20121026, 09:43  #1994 
Sep 2009
977 Posts 
For polynomial selection, jrk uses (and contributes to) msieve.

20121026, 12:06  #1995 
Feb 2005
The Netherlands
2·109 Posts 

20121026, 12:16  #1996 
"Carlos Pinho"
Oct 2011
Milton Keynes, UK
1317_{16} Posts 
Last fiddled with by pinhodecarlos on 20121026 at 12:17 
20121027, 07:39  #1997  
May 2008
447_{16} Posts 
Quote:
Code:
# aq4788:5073 # sieve with gnfslasieve4I14e on a side from Q=7M to 29M n: 29712030350422056407764987099112246876809290443496977616436205075052415484201116636430793917656509571664421538011459411836589836444181684355772841911 # norm 2.618315e14 alpha 6.295424 e 7.663e12 rroots 5 skew: 1166080.80 c0: 23750490127131804180671875097430105 c1: 665524504274009633437655504074 c2: 502177263538284124971913 c3: 940909512238674179 c4: 306611097123 c5: 296100 Y0: 39838125003638225433615547286 Y1: 46716866412058447 rlim: 14000000 alim: 14000000 lpbr: 29 lpba: 29 mfbr: 58 mfba: 58 rlambda: 2.55 alambda: 2.55 

20121027, 11:33  #1998 
Feb 2005
The Netherlands
2×109 Posts 

20121109, 14:13  #1999 
Feb 2005
The Netherlands
11011010_{2} Posts 
Now at line 5078, I'm already sieving the c133.

20121109, 14:47  #2000 
"Rich"
Aug 2002
Benicia, California
3^{2}·137 Posts 
How does a 2^4 * 31 driver break?

20121109, 15:50  #2001 
Romulan Interpreter
Jun 2011
Thailand
11·853 Posts 

20121109, 19:37  #2002 
Basketry That Evening!
"Bunslow the Bold"
Jun 2011
40<A<43 89<O<88
3·29·83 Posts 
Or any even power. Then the sequence is effectively class 4, which means it needs to the rest (besides 2^4*31^(2n)) needs to be a product of 4 primes or less, but that's not sufficient. (There are some restrictions on what each prime has to be mod 4 or mod 8 etc. Also, and other prime raised to an even power doesn't count against that 4.)

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