20121026, 08:02  #1992 
May 2008
447_{16} Posts 
I've started polynomial selection.

20121026, 08:08  #1993 
Feb 2005
The Netherlands
2×109 Posts 

20121026, 09:43  #1994 
Sep 2009
977_{10} 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
2×2,389 Posts 
Last fiddled with by pinhodecarlos on 20121026 at 12:17 
20121027, 07:39  #1997  
May 2008
10001000111_{2} 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
218_{10} Posts 

20121109, 14:13  #1999 
Feb 2005
The Netherlands
2×109 Posts 
Now at line 5078, I'm already sieving the c133.

20121109, 14:47  #2000 
"Rich"
Aug 2002
Benicia, California
2×3^{2}×5×13 Posts 
How does a 2^4 * 31 driver break?

20121109, 15:50  #2001 
Romulan Interpreter
Jun 2011
Thailand
2^{2}×2,239 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.)

Thread Tools  
Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
Reserved for MF  Sequence 3366  RichD  Aliquot Sequences  432  20201029 00:57 
Primes in nfibonacci sequence and nstep fibonacci sequence  sweety439  And now for something completely different  17  20170613 03:49 
ECM for c166 from 4788:2661  frmky  Aliquot Sequences  36  20110428 06:27 
ECM work on 4788:2549.c170  schickel  Aliquot Sequences  51  20110105 02:32 
80M to 64 bits ... but not really reserved  petrw1  Lone Mersenne Hunters  82  20100111 01:57 