mersenneforum.org Reserved for MF - Sequence 4788
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2009-03-18, 07:24   #1
schickel

"Frank <^>"
Dec 2004
CDP Janesville

2·1,049 Posts
Reserved for MF - Sequence 4788

Back story: Weib Bosma had a note on his site about 314718 merging with 16100. Further research revealed that 314718 actually merges with 4788:
Code:
314718.elf:i6466 = 4788.elf:i6 = 60564
(Meaning that 314718 line 6466 is the same as 4788 line 6.)

Christophe Clavier 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
PS. The guide is pretty benign: 2^4 * 7

mod-edit:
Link to sequence 4788 in the database.
Attached Files
 4788.elf.2500-4807.bz2 (216.8 KB, 139 views)

Last fiddled with by henryzz on 2016-06-11 at 14:22 Reason: Changed link to factordb rather than the old version and moved the 3408 link

 2009-03-18, 07:31 #2 henryzz Just call me Henry     "David" Sep 2007 Cambridge (GMT/BST) 22·1,433 Posts 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
2009-03-18, 08:30   #3
axn

Jun 2003

22·32·131 Posts

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

 2009-03-18, 08:51 #4 10metreh     Nov 2008 44228 Posts I hope I live to see it reach 10000 lines!
 2009-03-18, 22:36 #5 axn     Jun 2003 22·32·131 Posts Code: prp46 factor: 9689948256303989849690101574446059415187644819 prp68 factor: 34465599369545242212965875186451104260540178989891925806773466727213 Submitted to database. It's all yours.
2009-03-19, 00:47   #6
schickel

"Frank <^>"
Dec 2004
CDP Janesville

2×1,049 Posts

Quote:
 Originally Posted by axn Code: prp46 factor: 9689948256303989849690101574446059415187644819 prp68 factor: 34465599369545242212965875186451104260540178989891925806773466727213 Submitted to database. It's all yours.
Thanks for the jog! I'll crank this a couple of turns and see what pops out....

 2009-03-20, 09:22 #7 schickel     "Frank <^>" Dec 2004 CDP Janesville 2·1,049 Posts Line 2351, c104 Well, the next line has coughed up a c104. Code: 19445023820759413049735139448328858269561257022217272850132406976527254917250850973392258860412964099301 Want to tackle it henryzz?
 2009-03-20, 09:48 #8 axn     Jun 2003 22×32×131 Posts Ooh... I finally got bored and started on it a couple of hours back. Maybe the next one?
2009-03-20, 11:36   #9
schickel

"Frank <^>"
Dec 2004
CDP Janesville

2×1,049 Posts

Quote:
 Originally Posted by axn Ooh... I finally got bored and started on it a couple of hours back. Maybe the next one?
Sorry about the late posting, I got busy with my other sequences. Want to take on the sequence or just the c104?

2009-03-20, 13:00   #10
axn

Jun 2003

126C16 Posts

Quote:
 Originally Posted by schickel Sorry about the late posting, I got busy with my other sequences. Want to take on the sequence or just the c104?
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

2009-03-23, 07:46   #11
axn

Jun 2003

22·32·131 Posts

Quote:
 Originally Posted by axn 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:
 Originally Posted by schickel 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....
Currently, it is stuck on a c103 (which I'm not going to do), so it's up for grabs.

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