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 2005-01-18, 14:22 #1 garo     Aug 2002 Termonfeckin, IE 2·5·251 Posts 6- table Code: Size Base Index - Diff. Ratio Notes 281 6 421 - 327.6 0.856 321 6 431 - 335.3 0.955 273 6 437 - 340 0.801 293 6 439 - 341.6 0.856 259 6 445 - 277 0.933 /5q 336 6 449 - 349.3 0.96 308 6 451 - 319 0.963 /11q 250 6 457 - 355.6 0.701 337 6 461 - 358.7 0.938 258 6 463 - 360.2 0.714 310 6 467 - 363.3 0.86 293 6 473 - 334.6 0.874 /11q 317 6 479 - 372.7 0.849 290 6 481 - 345.4 0.837 /13 299 6 485 - 301.9 0.988 /5q 320 6 487 - 378.9 0.843 301 6 491 - 382 0.786 276 6 493 - 383.6 0.718 277 6 497 - 331.4 0.834 /7 379 6 499 - 388.2 0.974 Last fiddled with by Batalov on 2019-08-08 at 02:39 Reason: 6,401- is done
 2006-12-18, 19:29 #2 smh     "Sander" Oct 2002 52.345322,5.52471 29·41 Posts 6,387- Code: N=44031017740982928067538705953801189246013052570402834343832374510583225456135162211816299899613030974567524511477153154642766468275281718659648235588552347206547842353356774275612337 ( 182 digits) SNFS difficulty: 200 digits. Divisors found: r1=396617565007083620931188002164448757655876754586218585374821747799540417379 (pp75) r2=111016307964566649045756932943929716969554706760914531131640167955206717252780433501309849995957928482083803 (pp108)
 2007-12-27, 17:14 #3 Xyzzy     "Mike" Aug 2002 13·593 Posts From Raman: 6,305- Code: prp53 factor: 24506226188880631899928133376464081634967825718604821 prp103 factor: 1068071855703783761181123461268973104294098322369041790833437139214193724057795181478916448908089214641
2007-12-31, 14:58   #4
Raman
Noodles

"Mr. Tuch"
Dec 2007
Chennai, India

3·419 Posts

Quote:
 Originally Posted by Xyzzy From Raman: 6,305- Code: prp53 factor: 24506226188880631899928133376464081634967825718604821 prp103 factor: 1068071855703783761181123461268973104294098322369041790833437139214193724057795181478916448908089214641
Happy New year to everyone. I can contribute many things to this forum.

Please give me chance to show off my good behaviour. Please co-operate.
What is the purpose of factoring of 6,305- otherwise?

How do you feel if I do not let you join my forum and that you are interested in joining it up then?

2008-01-01, 14:46   #5
bdodson

Jun 2005
lehigh.edu

210 Posts

Quote:
 Originally Posted by Raman ... I can contribute many things to this forum. ... Please give me chance to show off my good behaviour. Please co-operate. What is the purpose of factoring of 6,305- otherwise? ...
I'm replying against my better judgement; not wishing to have my email
filtering software burdened by months of email bombs from you, again. While
there may be many things you can contribute, I'd like to make a suggestion,
intended to be helpful: consider _not_ replying to some of the posts you
have an interest in. I find many posts with things that I could comment on;
but readers of the forum have heard my comments before and/or other
people do just as well at replying. If you feel that you just have to post
your comment on everything that floats by --- without considering whether
it's actually a positive (i.e., not negative) contribution --- readers will
tire from hearing from you sooner, rather than later.

The Gerbils, in their wisdom, didn't consult me on re-admitting you to the
forum; if they had, I'd have suggested a somewhat longer probation;
say, long enough to finish that second Cunningham you've had reserved
for months. Peace, bdodson

2008-01-01, 15:24   #6
xilman
Bamboozled!

"𒉺𒌌𒇷𒆷𒀭"
May 2003
Down not across

7·1,447 Posts

Quote:
 Originally Posted by bdodson The Gerbils, in their wisdom, didn't consult me on re-admitting you to the forum; if they had, I'd have suggested a somewhat longer probation; say, long enough to finish that second Cunningham you've had reserved for months.
Mea culpa.

The consultation was with me, as I'd posted an article telling him everything he needs to know to find good NFS parameters for his factorization. Posting a succinct pointer to it seemed a less bad alternative to enduring several more months of whinging.

Raman: my earlier advice to you stands. Come back here after you have factors and not before. Not everyone here is a soft hearted/headed (choose 1) as I am and I assure you that our collective tolerance is still extremely low. You will find period of quiet contemplation will serve you very well indeed. Meditation has a lot to recommend it.

Paul

2008-01-01, 17:13   #7
Raman
Noodles

"Mr. Tuch"
Dec 2007
Chennai, India

100111010012 Posts

Quote:
 Originally Posted by xilman Raman: my earlier advice to you stands. Come back here after you have factors and not before.
So, you mean the factors for 7,295-?

BTW, it will take a long time (probably one year) unless I add up more machines for the computation. I can use additional machines besides my 2.8 GHz dual core processor anyway. (Especially my uncle's 3.06 GHz Pentium IV)

Thanks. I will utilize this chance properly.

 2009-05-03, 16:02 #8 fivemack (loop (#_fork))     Feb 2006 Cambridge, England 2·29·109 Posts 6,347- Sieving by Bruce Dodson, parameter selection and completion by Tom Womack. This may be the first job with 32-bit large primes both sides to be finished with msieve. Polynomials x^6-6, x-6^58. Small primes up to 160 million on both sides, sieved with 15e for Q=10M-170M algebraic side and Q=10M-260M rational side. 367372454 unique relations from something over half a billion raw (better estimate of runtime and rawrelcount coming soon). 36 hours on one CPU of a 12GB i7 running at 2.8GHz, with peak memory usage around 10GB, to get to Sun Mar 29 21:56:52 2009 weight of 19120844 cycles is about 1338865042 (70.02/cycle) and another two hours to get to Mon Mar 30 00:06:39 2009 matrix is 19036824 x 19037072 (5329.0 MB) with weight 1283623590 (67.43/col) Mon Mar 30 00:06:39 2009 sparse part has weight 1206600171 (63.38/col) The slight oddity in the filtering was 19311242 "warning: zero character" messages appearing on stderr. Then four threads of the i7 crunched fairly solidly (with one small pause caused by the system disc on the i7 machine failing) for 821 hours, using ~6.5GB RAM, to get 14 dependencies. Square root done on two threads separately (I tried four, but it needs 4.5GB RAM peak per thread), three hours per sqrt, initially two dependencies per thread, and each thread found one of the P96 factors. Oh yes, the factors: 6^347-1 = 5 * 16657 * 92013588619490399 * P58 * P96a * P96b where Code: P58 = 8023776342054310550242315692074754087050026551393750990167 P96a = 112962017521735300449115732149174215721837276361901343007283764634643624748720079471271422964001 P96b = 150229032135327752933222419558205115221308398344159056674278560696885280711039602252138197654667
2009-05-03, 18:36   #9
frmky

Jul 2003
So Cal

22·7·73 Posts

Wow, congratulations!

Quote:
 Originally Posted by fivemack 32-bit large primes both sides 367372454 unique relations matrix is 19036824 x 19037072 (5329.0 MB) with weight 1283623590 (67.43/col) four threads of the i7 crunched fairly solidly ... for 821 hours
Not much oversieving. I would have expected the matrix to be much bigger. Even our 2,908+ matrix is a bit bigger. And the i7 is fast! That matrix took only a month. The 2,908+ matrix should finish in a couple of weeks, and it will have taken about 3.5 months on a 2GHz Barcelona K10.

Greg

Last fiddled with by frmky on 2009-05-03 at 18:37

2009-05-03, 18:43   #10
Andi47

Oct 2004
Austria

1001101001112 Posts

Quote:
 Originally Posted by fivemack Sieving by Bruce Dodson, parameter selection and completion by Tom Womack. This may be the first job with 32-bit large primes both sides to be finished with msieve. Polynomials x^6-6, x-6^58. Small primes up to 160 million on both sides, sieved with 15e for Q=10M-170M algebraic side and Q=10M-260M rational side. 367372454 unique relations from something over half a billion raw (better estimate of runtime and rawrelcount coming soon). 36 hours on one CPU of a 12GB i7 running at 2.8GHz, with peak memory usage around 10GB, to get to Sun Mar 29 21:56:52 2009 weight of 19120844 cycles is about 1338865042 (70.02/cycle) and another two hours to get to Mon Mar 30 00:06:39 2009 matrix is 19036824 x 19037072 (5329.0 MB) with weight 1283623590 (67.43/col) Mon Mar 30 00:06:39 2009 sparse part has weight 1206600171 (63.38/col) The slight oddity in the filtering was 19311242 "warning: zero character" messages appearing on stderr. Then four threads of the i7 crunched fairly solidly (with one small pause caused by the system disc on the i7 machine failing) for 821 hours, using ~6.5GB RAM, to get 14 dependencies. Square root done on two threads separately (I tried four, but it needs 4.5GB RAM peak per thread), three hours per sqrt, initially two dependencies per thread, and each thread found one of the P96 factors. Oh yes, the factors: 6^347-1 = 5 * 16657 * 92013588619490399 * P58 * P96a * P96b where Code: P58 = 8023776342054310550242315692074754087050026551393750990167 P96a = 112962017521735300449115732149174215721837276361901343007283764634643624748720079471271422964001 P96b = 150229032135327752933222419558205115221308398344159056674278560696885280711039602252138197654667

P.S.: I just posted the factors to Syd's database.

 2009-05-03, 18:45 #11 10metreh     Nov 2008 44228 Posts How much ECM was run? Was the P58 an ECM miss?

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