mersenneforum.org

mersenneforum.org (https://www.mersenneforum.org/index.php)
-   Aliquot Sequences (https://www.mersenneforum.org/forumdisplay.php?f=90)
-   -   Reserved for MF - Sequence 4788 (https://www.mersenneforum.org/showthread.php?t=11615)

akruppa 2012-05-13 18:21

I haven't found many factors over the last few days, and haven't kept any of them as they usually were relatively small ECM factors. I remember one p51, but I haven't kept that one, either, since someone else had already submitted it.

Edit: I had an old .elf file, but it had data only up to i2998. That part agrees with an .elf file I just downloaded. I had two pages with factorizations left in my brower cache, but the factors appear in 4788.elf or 409578...8056.elf so they are not from the missing part.

RobertS 2012-05-13 19:44

Just in case:
The log file of my script, which runs ECM on the last composites of 4788.
Factors of terms 3373-3408, so only 3372 is missing.
[CODE]23:35:35 4788.3373:C113 B1=1000000 35325380801491504748070045973 added: 1
23:36:17 4788.3374:C81 B1=1000000 2141317713659627997057622792876571997551327467 added: 1
23:37:26 4788.3376:C85 B1=1000000 7699913161822247573 added: 2
23:37:28 4788.3377:C100 B1=1000000 17585202048994367 added: 0
23:37:35 4788.3378:C112 B1=1000000 9613645891265309 added: 0
23:37:42 4788.3380:C113 B1=1000000 578670248512500961 added: 0
23:38:16 4788.3381:C100 B1=1000000 1101870405375551814556296007009 added: 1
23:38:23 4788.3382:C106 B1=1000000 1108503548981 added: 1
23:38:30 4788.3382:C71 B1=1000000 6806477373344263446350885761 added: 0
23:38:46 4788.3383:C81 B1=1000000 169348724568606483653914130855262698915900685289927 added: 0
23:40:28 4788.3386:C105 B1=1000000 60624096937583 added: 0
01:32:21 4788.3387:C114 B1=44000000 112154658209074691222546265849621937434966836228837 added: 1
01:34:58 4788.3388:C111 B1=4000000 33866066054022123488931023659 added: 2
01:35:17 4788.3390:C95 B1=4000000 646482538389617412489407 added: 1
01:35:26 4788.3391:C115 B1=4000000 99721907 added: 0
01:35:38 4788.3392:C111 B1=4000000 227006464964297 added: 0
01:35:55 4788.3393:C77 B1=4000000 3092613893973696942891592909155617 added: 1
01:36:42 4788.3394:C90 B1=4000000 79212242071005124902911402723062272765456061223977 added: 1
01:46:04 4788.3397:C113 B1=4000000 1958807247942367721 added: 0
01:46:22 4788.3399:C93 B1=4000000 218182820706493 added: 0
01:47:18 4788.3402:C85 B1=4000000 1968963883404327666207731371 added: 1
01:47:28 4788.3403:C106 B1=4000000 88211778830249 added: 0
01:47:45 4788.3404:C104 B1=4000000 4833935116244443039 added: 0
01:48:03 4788.3405:C104 B1=4000000 1349145807142186249406051574127990099 added: 1
01:48:19 4788.3408:C107 B1=4000000 4492625450259614471 added: 0
01:48:37 4788.3408:C88 B1=4000000 5807928179646144670796389 added: 0[/CODE]Line 3387 was a nice shot.

A lurker

Batalov 2012-05-13 19:50

I am bowing out at +1398, c112. Put one line in your elf file and you can go with aliqueit -e
[CODE] 1397 . 1001777285392569572904290646390787226308237439383461254469983491988408403137367200479555518410377674168016748413824068285936 = 2^4 * 31 * 1447 * 18103888892349677 * 1922571138731027507 * 334759903278150757688691430026991 * 119793497488326129606597958143119427551092583328047
[/CODE]

I'll run the c108 for closure.

firejuggler 2012-05-13 20:59

doing i3372

Batalov 2012-05-13 22:08

[QUOTE=RobertS;299365]Just in case:
The log file of my script, which runs ECM on the last composites of 4788.
Factors of terms 3373-3408, so only 3372 is missing

Line 3387 was a nice shot.

A lurker[/QUOTE]
Some factors are missing, but your factors are defintely of help to close the gap. (A c99 or a c78 here and there. Not too much trouble.)

Almost there... 3404... ...It was [URL="http://factordb.com/aliquot.php?type=1&aq=4788"]all the same sequence[/URL] after all. That's a relief. My job is done here.

akruppa 2012-05-13 22:12

Gap is filled now.

firejuggler 2012-05-13 22:15

jumped to i4807

trivia : i4788: C122= 6241907618...68<122> = 2^4 · 11 · 31 · 6496661 · 25322483587171<14> · 164303024281086101<18> · 17904179958078803880992339<26> ·23639945956200306806712736616774832458124891819074685667<56>

Batalov 2012-05-13 22:20

[QUOTE=firejuggler;299385]jumped to i4807[/QUOTE]
[QUOTE=Batalov;299366]I am bowing out at +1398, c112..[/QUOTE]
Well, the last I checked my abacus 3409+1398 was 4807 :ouch1:
Not a really big surprise here.

science_man_88 2012-05-13 22:27

[QUOTE=firejuggler;299385]trivia : i4788: C122= 6241907618...68<122> = 2^4 · 11 · 31 · 6496661 · 25322483587171<14> · 164303024281086101<18> · 17904179958078803880992339<26> ·23639945956200306806712736616774832458124891819074685667<56>[/QUOTE]

the thing that I find interesting is that 2^4 has persisted since 4318 according to the find function in my browser ( and yes I checked for gaps beforehand in the range I looked at.

science_man_88 2012-05-13 22:33

[QUOTE=Batalov;299389]That's is [B]very[/B] interesting! This is called a 2^4*31 driver, ...man.[/QUOTE]

doh didn't look for other commonalities. not all 490 have 31^1 though some are raised higher.still seems interestingly long for one thing to persist since that's over 10% of the length of the sequences for 2^4 in a row. doh 496 a perfect number.

akruppa 2012-05-13 23:21

I put an .elf file with the last 2307 iterations in the first posting of the thread. I'll try to update it every once in a while.


All times are UTC. The time now is 23:13.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.