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-   -   Reserved for MF - Sequence 4788 (https://www.mersenneforum.org/showthread.php?t=11615)

schickel 2009-03-18 07:24

Reserved for MF - Sequence 4788
 
1 Attachment(s)
Back story: Weib Bosma had a note on his [URL="http://www.math.ru.nl/%7Ebosma/Projects/tabB.html"]site[/URL] about 314718 merging with 16100. Further research revealed that 314718 actually merges with 4788:[code]314718.elf:i6466 = 4788.elf:i6 = 60564[/code](Meaning that 314718 line 6466 is the same as 4788 line 6.)

[URL="http://christophe.clavier.free.fr/Aliquot/site/Aliquot.html"]Christophe Clavier[/URL] has been working on 4788 and had it at line 2335 stalled on a c131. Factoreyes ran an NFS job for me and cracked it as p46*p86. I managed to run ECM jobs on lines 2336-2349. Presently I am on line 2350 with a c114 that has had 120 curves at 43M. Since I am booked up on my NFS resources, I want to pass this job off to someone else that can tackle it easier than I can.

Let me know if you want to take over 4788 or just tackle the c114 and pass 4788 back to the forum....

The c114:[code]333969874513396811666453580618603759213027599438507119081627586159016823042831267378101968786698031498425405759447[/code]PS. The guide is pretty benign: 2^4 * 7

mod-edit:
[URL="http://factordb.com/sequences.php?se=1&eff=2&aq=4788&action=last20&fr=0&to=100"][U]Link[/U][/URL] to sequence 4788 in the database.

henryzz 2009-03-18 07:31

i could tackle a C114 in at most a week probably a lot less
i will start this evening unless a better offer comes along

axn 2009-03-18 08:30

[QUOTE=henryzz;165852]i could tackle a C114 in at most a week probably a lot less
i will start this evening unless a better offer comes along[/QUOTE]

I can do this in 24hr (+/-). I will start now. (Post here if you want to do it anyway).

10metreh 2009-03-18 08:51

I hope I live to see it reach 10000 lines!

axn 2009-03-18 22:36

[CODE]prp46 factor: 9689948256303989849690101574446059415187644819
prp68 factor: 34465599369545242212965875186451104260540178989891925806773466727213[/CODE]
Submitted to database. It's all yours.

schickel 2009-03-19 00:47

[QUOTE=axn;165928][CODE]prp46 factor: 9689948256303989849690101574446059415187644819
prp68 factor: 34465599369545242212965875186451104260540178989891925806773466727213[/CODE]
Submitted to database. It's all yours.[/QUOTE]Thanks for the jog! I'll crank this a couple of turns and see what pops out....

schickel 2009-03-20 09:22

Line 2351, c104
 
Well, the next line has coughed up a c104.[code]19445023820759413049735139448328858269561257022217272850132406976527254917250850973392258860412964099301[/code]Want to tackle it henryzz?

axn 2009-03-20 09:48

Ooh... I finally got bored and started on it a couple of hours back. :sad: Maybe the next one?

schickel 2009-03-20 11:36

[QUOTE=axn;166080]Ooh... I finally got bored and started on it a couple of hours back. :sad: Maybe the next one?[/QUOTE]Sorry about the late posting, I got busy with my other sequences. Want to take on the sequence or just the c104?

axn 2009-03-20 13:00

[QUOTE=schickel;166093]Sorry about the late posting, I got busy with my other sequences. Want to take on the sequence or just the c104?[/QUOTE]

Not really interested in committing to this. So I'll just split the c104 (and run it up until ECM on Syd's database fails to crack a number completely).

BTW, c104 is
[CODE]prp46 factor: 1189707387148188861504157624967064754966772497
prp59 factor: 16344375121827631980934001785563155648000810304857412547733
[/CODE]

axn 2009-03-23 07:46

[QUOTE=axn;166103]Not really interested in committing to this. So I'll just split the c104 (and run it up until ECM on Syd's database fails to crack a number completely).[/QUOTE]

[QUOTE=schickel;166342]If we're going to look at a group effort, I would lean more towards 4788, which would be a good candidate after axn gives up on it....[/QUOTE]

Currently, it is stuck on a c103 (which I'm not going to do), so it's up for grabs.


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