20130225, 14:43  #2091 
"Ed Hall"
Dec 2009
Adirondack Mtns
CB8_{16} Posts 
+1213@43e6 (total: 8213)
I'll move up to 11e7 
20130225, 16:13  #2092 
Oct 2006
Berlin, Germany
569 Posts 
9500@11e7 done so far, and counting:
http://www.rechenkraft.net/yoyo//y_status_ecm.php 
20130225, 16:21  #2093 
"Frank <^>"
Dec 2004
CDP Janesville
4112_{8} Posts 

20130225, 23:28  #2094 
"Ed Hall"
Dec 2009
Adirondack Mtns
2^{3}·11·37 Posts 
With the power of yoyo@home, is it even worth anything for me to run 11e7 curves? I'm only a little over 250 right now and one of my machines even refuses to do stage 2:
Code:
> ___________________________________________________________________ >  Running ecm.py, a Python driver for distributing GMPECM work  >  on a single machine. It is Copyright, 2012, David Cleaver and  >  is a conversion of factmsieve.py that is Copyright, 2010, Brian  >  Gladman. Version 0.10 (Python 2.6 or later) 30th Sep 2012.  > _________________________________________________________________ > Number(s) to factor: > 17285154910805941577069464828335617544658066950627644021728302169526833018711670895092479561808160256160945139573800969912234390238908363042669550995167201537635764747005337 (173 digits) >============================================================================= > Working on number: 172851549108059415...537635764747005337 (173 digits) > Currently working on: job0137.txt > Starting 1 instance of GMPECM... > ./ecm c 100 110000000 < job0137.txt > job0137_t00.txt GMPECM 6.4.3 [configured with GMP 5.0.2] [ECM] Using B1=110000000, B2=776278396540, polynomial Dickson(30), 1 thread Done 0/100; avg s/curve: stg1 4432s, stg2 n/a s; runtime: 4772s > *** Error: unexpected return value: 9 
20130225, 23:42  #2095 
"Serge"
Mar 2008
Phi(4,2^7658614+1)/2
2·3·17·89 Posts 
Not really. Even if you would like to find a record factor, the conditional probability of success of any curve is dropping down to zero as I am typing... (Conditional on that yoyo@home already ran 10^4 curves at this moment and didn't find a factor.)
Last fiddled with by Batalov on 20130225 at 23:45 
20130226, 15:09  #2096 
Oct 2006
Berlin, Germany
569 Posts 
Will be 18000 curves @ 11e7 enough or is there more needed?
yoyo 
20130226, 17:57  #2097 
Basketry That Evening!
"Bunslow the Bold"
Jun 2011
40<A<43 89<O<88
16065_{8} Posts 
You could always ECM at a t80 level and go for a record ECM factorization

20130226, 20:23  #2098 
"Ed Hall"
Dec 2009
Adirondack Mtns
110010111000_{2} Posts 
The trouble for me is that as I increase B1, more and more machines fall by the wayside. At 43e7 more than half tell me to get lost. And, I just can't see my attention span lasting for that long anyway...

20130226, 21:54  #2099 
Oct 2004
Austria
2×17×73 Posts 
If my estimation is correct (i.e. if I have no mistakes in my tables), ~2*t55 = 2*18k = 36k curves @11e7 are are needed for a c173.
Edit: I just see that you have queued 42k@26e7. This might be a bit of trying for record factorization, but why not... Last fiddled with by Andi47 on 20130226 at 21:56 
20130303, 19:05  #2100 
Oct 2006
Berlin, Germany
569_{10} Posts 
No factor found so far with 40k curves @26e7.
yoyo 
20130310, 08:47  #2101 
Oct 2010
BF_{16} Posts 
Nothing
Code:
GMPECM 7.0dev [configured with GMP 5.1.1, enableasmredc, enableassert, enableopenmp] [P1] Input number is 17285154910805941577069464828335617544658066950627644021728302169526833018711670895092479561808160256160945139573800969912234390238908363042669550995167201537635764747005337 (173 digits) Using B1=100000000000, B2=484004602750364712, polynomial x^1, x0=4104192314 Step 1 took 24940729ms Step 2 took 40735246ms 
Thread Tools  
Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
Reserved for MF  Sequence 3366  RichD  Aliquot Sequences  406  20200610 03:10 
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 