Post status updates here - Page 60

Mini-Geek · 2011-01-12, 02:43

Quote:

Originally Posted by Mini-Geek

Make that 7. At i2836, just after peaking at size 108, it acquired the downdriver again. Currently at 100 digits and dropping. This sequence is quite the roller coaster!

That bottomed out at 74 digits. A little while later, it went to the 2^2 * 7 driver. It went straight from that to 2 * 3, which it's still got. 2 * 3^4 * c99 (full ECM). I'm releasing it.

schickel · 2011-01-13, 10:14

Quote:

Originally Posted by msieve

Thu Jan 13 00:34:59 2011 commencing Lanczos iteration (2 threads)
Thu Jan 13 00:34:59 2011 memory use: 1682.5 MB
Thu Jan 13 00:36:20 2011 linear algebra at 0.0%, ETA 151h20m

Now only 6 more days before my factors.....I can hardly wait!

Andi47 · 2011-01-13, 11:49

Quote:

Originally Posted by schickel

Now only 6 more days before my factors.....I can hardly wait!

from which number / sequence is this one?

schickel · 2011-01-13, 20:34

Quote:

Originally Posted by Andi47

from which number / sequence is this one?

You're right....I forgot to specify. This is a c155 from 363270:i1730. I think I picked slightly bad parameters for this one; I've been sieving since the first week of December.

schickel · 2011-01-23, 05:51

Not a specific update, but I just uploaded an updated summary file for all the sequences below 1M. Available here.

schickel · 2011-01-23, 05:58

Quote:

Originally Posted by schickel

Now only 6 more days before my factors.....I can hardly wait!

msieve came really close on the ETA:

Code:

BLanczosTime: 539162
elapsed time 149:46:04

And the final result:

Code:

prp58 factor: 3471537060073909445732093208261232664488685526359035900511
prp97 factor: 3774567531904111499906361116342583365390634599112560322236069538347385670533260739954094206097627
elapsed time 02:07:34

Factorization found on the second dependency. The first failed to converge, but I'm ran v1.44 on this job. Would it be worth rerunning with a later version to see if it fails too?

bchaffin · 2011-01-23, 20:13

20076 rode the downdriver from 130 to 60 digits, and again from 123 to 99. I'm releasing it at 136 digits -- no driver, but it has 2^2*3.

259704 decreased from 109 to 98, then from 127 all the way to 44, then from 64 down to 36, losing and re-acquiring the downdriver many times. Unfortunately that was the bottom, and now I'm releasing it at 132 digits.

unconnected · 2011-01-31, 15:19

Nice split 933436 i5540: c140=2^4*p70*p70

unconnected · 2011-02-07, 12:56

Sequence 980820:
i448: c112=2^2*23*p55*p56
i449: c112=2^2*p56*p56

schickel · 2011-02-17, 12:19

[ From the Project 400 thread: ]

Quote:

Originally Posted by smh

606844 301. sz 104 is now at 393. sz 138

I'll have to leave the last few steps to someone else

Quote:

Originally Posted by schickel

I don't blame you. Adding a digit every 2.7 lines is really harsh. It's starting to look like there are some sequences that might not make it to 500 lines.....

380084 is probably headed for the same fate.

Code:

349 . c127 = 2^3 * 3^2 * 5 * 17 * 1559 * 43395347 * 2298548843 * 3097327847 * 635125438236943313925271989757082443450449221967136097953962911775710642471106209803032658147
350 . c127 = 2^3 * 3^2 * 5 * 12706628197434966603317873024295403184167765900803117941114949357305886261908885123525359196673301588387705509597161360456413
351 . c128 = 2^2 * 3^2 * 5^2 * 11 * 109 * 1478882389 * 363799221292824940250137 * 17727938905842110813476818525368399201012562448441511481329316457363164552859319425390439

I guess there's still some legs left here....especially if I can drop the exponent on the '3'.

schickel · 2011-02-19, 05:05

Quote:

Originally Posted by schickel

[ From the Project 400 thread: ]

Code:

349 . c127 = 2^3 * 3^2 * 5 * 17 * 1559 * 43395347 * 2298548843 * 3097327847 * 635125438236943313925271989757082443450449221967136097953962911775710642471106209803032658147
350 . c127 = 2^3 * 3^2 * 5 * 12706628197434966603317873024295403184167765900803117941114949357305886261908885123525359196673301588387705509597161360456413
351 . c128 = 2^2 * 3^2 * 5^2 * 11 * 109 * 1478882389 * 363799221292824940250137 * 17727938905842110813476818525368399201012562448441511481329316457363164552859319425390439

I guess there's still some legs left here....especially if I can drop the exponent on the '3'.

Well, hell, I get just what I asked for and I'm still not happy:

Code:

361 . c131 = 2^2 * 3^4 * 375209 * 816925381 * 123183821879413505958696097974640632000800516037734775271511334931417825346796844722603107514691685854588124576509
362 . c131 = 2^2 * 3^2 * 548542617115515766329519800750987923569649925986880889784275533144866558184796089239508465604004811089320232777242772529523546701
363 . c131 = 2 * 3 * 47 * 467 * 310741 * 121869866731935185737 * 2329481100810781164524423902634323897619541885029 * 2596886616989739333285373899123868159428396638125013

Luckily

the growth will slow down if the exponent of 3 doesn't increase.

2011-01-23, 05:51	#654
schickel "Frank <^>" Dec 2004 CDP Janesville 84A₁₆ Posts	Not a specific update, but I just uploaded an updated summary file for all the sequences below 1M. Available here. Last fiddled with by schickel on 2011-06-17 at 23:19 Reason: Added range for the interested (fixed typo)

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2011-01-23, 20:13	#656
bchaffin Sep 2010 Portland, OR 2²·3·31 Posts	20076 rode the downdriver from 130 to 60 digits, and again from 123 to 99. I'm releasing it at 136 digits -- no driver, but it has 2^2*3. 259704 decreased from 109 to 98, then from 127 all the way to 44, then from 64 down to 36, losing and re-acquiring the downdriver many times. Unfortunately that was the bottom, and now I'm releasing it at 132 digits.

2011-01-31, 15:19	#657
unconnected May 2009 Russia, Moscow 2,593 Posts	Nice split 933436 i5540: c140=2^4p70p70

2011-02-07, 12:56	#658
unconnected May 2009 Russia, Moscow 2593₁₀ Posts	Sequence 980820: i448: c112=2^223p55*p56 i449: c112=2^2*p56*p56