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Old 2013-08-12, 03:52   #8
EdH
 
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"Ed Hall"
Dec 2009
Adirondack Mtns

E6816 Posts
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At about 1660 curves @ 43000000:
Code:
$ python ecm.py -threads 2 -c 2000 43000000 <ecmIn
-> ___________________________________________________________________
-> | Running ecm.py, a Python driver for distributing GMP-ECM 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:
-> 82572604842970740226575313011024210867650562043391903215525706141475272605260959388176023149958914785033958356770086632201183899666330968322243 (143 digits)
->=============================================================================
-> Working on number: 825726048429707402...899666330968322243 (143 digits)
-> Currently working on: job5530.txt
-> Starting 2 instances of GMP-ECM...
-> ./ecm -c 1000 43000000 < job5530.txt > job5530_t00.txt
-> ./ecm -c 1000 43000000 < job5530.txt > job5530_t01.txt
 
GMP-ECM 6.4.4 [configured with GMP 5.1.2, --enable-asm-redc] [ECM]
Using B1=43000000, B2=240490660426, polynomial Dickson(12), 2 threads
Done 219/2000; avg s/curve: stg1 199.7s, stg2 57.81s; runtime: 28620s

Run 219 out of 2000:
Using B1=43000000, B2=240490660426, polynomial Dickson(12), sigma=2507321602
Step 1 took 200036ms
Step 2 took 57956ms
********** Factor found in step 2: 1207628288954874358756230750720893104793451481159
Found probable prime factor of 49 digits: 1207628288954874358756230750720893104793451481159
Probable prime cofactor 68375845115745085102927692017310006270434002895546517987965895954910700224363999707612562247077 has 95 digits
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