[QUOTE=Mini-Geek;245689]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![/QUOTE]

[URL="http://factordb.com/sequences.php?se=1&aq=509466"]That[/URL] 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.

Finally!
 

[quote=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[/quote]Now only 6 more days before my factors.....I can hardly wait!

:popcorn:

[QUOTE=schickel;246057]Now only 6 more days before my factors.....I can hardly wait!

:popcorn:[/QUOTE]

from which number / sequence is this one?

[QUOTE=Andi47;246067]from which number / sequence is this one?[/QUOTE]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.

Not a specific update, but I just uploaded an updated summary file for all the sequences below 1M. Available [URL="ftp://ftp.frontiernet.net/pub/users/aliquot/public_ftp/AllSeq.zip"]here[/URL].

[QUOTE=schickel;246057]Now only 6 more days before my factors.....I can hardly wait!

:popcorn:[/QUOTE]msieve came really close on the ETA:[code]BLanczosTime: 539162
elapsed time 149:46:04[/code]And the final result:[code]prp58 factor: 3471537060073909445732093208261232664488685526359035900511
prp97 factor: 3774567531904111499906361116342583365390634599112560322236069538347385670533260739954094206097627
elapsed time 02:07:34[/code]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?

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.

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

Sequence 980820:
i448: c112=2^2*23*[B]p55[/B]*[B]p56[/B]
i449: c112=2^2*[B]p56[/B]*[B]p56[/B]

[ From the Project 400 [URL="http://www.mersenneforum.org/showthread.php?t=14487"]thread[/URL]: ][QUOTE=smh;252545]606844 301. sz 104 is now at 393. sz 138

I'll have to leave the last few steps to someone else[/QUOTE]
[QUOTE=schickel;252551]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.....

[SIZE="1"]380084 is probably headed for the same fate.[/size][/QUOTE]:party:

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

[QUOTE=schickel;252764][ From the Project 400 [URL="http://www.mersenneforum.org/showthread.php?t=14487"]thread[/URL]: ]
:party:

[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[/code]I guess there's still some legs left here....especially if I can drop the exponent on the '3'.[/QUOTE]Well, hell, I get just what I asked for and I'm [I]still[/I] 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[/code]:cry:

Luckily :ermm: the growth will slow down if the exponent of 3 doesn't [I]increase[/I].