20120513, 18:21  #1937 
"Nancy"
Aug 2002
Alexandria
2464_{10} Posts 
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. Last fiddled with by akruppa on 20120513 at 18:46 
20120513, 19:44  #1938 
Aug 2009
somewhere
197 Posts 
Just in case:
The log file of my script, which runs ECM on the last composites of 4788. Factors of terms 33733408, 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 A lurker Last fiddled with by RobertS on 20120513 at 19:48 
20120513, 19:50  #1939 
"Serge"
Mar 2008
Phi(4,2^7658614+1)/2
21643_{8} Posts 
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 Last fiddled with by Batalov on 20120513 at 20:07 
20120513, 20:59  #1940 
Apr 2010
Over the rainbow
4602_{8} Posts 
doing i3372

20120513, 22:08  #1941  
"Serge"
Mar 2008
Phi(4,2^7658614+1)/2
9123_{10} Posts 
Quote:
Almost there... 3404... ...It was all the same sequence after all. That's a relief. My job is done here. Last fiddled with by Batalov on 20120513 at 22:13 Reason: siamese twins were successfully joined at the hip 

20120513, 22:12  #1942 
"Nancy"
Aug 2002
Alexandria
2^{5}×7×11 Posts 
Gap is filled now.

20120513, 22:15  #1943 
Apr 2010
Over the rainbow
2·1,217 Posts 
jumped to i4807
trivia : i4788: C122= 6241907618...68<122> = 2^4 · 11 · 31 · 6496661 · 25322483587171<14> · 164303024281086101<18> · 17904179958078803880992339<26> ·23639945956200306806712736616774832458124891819074685667<56> 
20120513, 22:20  #1944 
"Serge"
Mar 2008
Phi(4,2^7658614+1)/2
3·3,041 Posts 

20120513, 22:27  #1945 
"Forget I exist"
Jul 2009
Dumbassville
8,369 Posts 
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.

20120513, 22:33  #1946 
"Forget I exist"
Jul 2009
Dumbassville
8,369 Posts 
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.
Last fiddled with by science_man_88 on 20120513 at 22:39 
20120513, 23:21  #1947 
"Nancy"
Aug 2002
Alexandria
2^{5}·7·11 Posts 
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.

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