[QUOTE=Mini-Geek;241218][URL="http://factordb.com/sequences.php?se=1&aq=789816"]789816[/URL] just acquired the downdriver at a height of 104! (i1201) :fusion: Currently height 103, i1205, finishing a c91 GNFS.[/QUOTE]

It lost the downdriver at i1331, bottomed out at 75 digits, and then acquired 2^2 * 7 at i1447. Current size is 79, i1514.

68067066 is now at i6003, 2^2*7 driver and at 116 digits
since the last update, it went down to 74 digits (i5776) and been on the up side since then
[URL="http://factordb.com/aliquot.php?type=1&aq=68067066&big=1"]large graph[/URL]

[url=http://factordb.com/sequences.php?se=1&eff=2&aq=256280&action=last20&fr=0&to=100]256280[/url] picked up a downdriver at 102 digits, line 1230, this morning, eventually went down to 46 digits, got driven back up by a succession of drivers and guides and has now become stable again at line 1783 having reached 100 digits. :smile:

[QUOTE=10metreh;242907][url=http://factordb.com/sequences.php?se=1&eff=2&aq=256280&action=last20&fr=0&to=100]256280[/url] picked up a downdriver at 102 digits, line 1230, this morning, eventually went down to 46 digits, got driven back up by a succession of drivers and guides and has now become stable again at line 1783 having reached 100 digits. :smile:[/QUOTE]That is the [I]flattest[/I] plateau I think I've seen....

[QUOTE=schickel;242923]That is the [I]flattest[/I] plateau I think I've seen....[/QUOTE]

Yes, quite flat! From i1207 to i1230, (coincidentally, all indices(?) where it was 102 digits) it never went outside of 1299... to 1945... (1945/1299 ~ 1.5, so the largest was ~50% larger than the smallest)

[QUOTE=Mini-Geek;242928]From i1207 to i1230, (coincidentally, all indices(?) where it was 102 digits)[/QUOTE]

Yes, that was all indices where it was 102 digits unless you're counting lines 1804-1810 (which weren't in the DB when schickel posted) much later.
On a similar note, what's the longest you've seen a sequence stay on one digit level? I think I've seen one or two above 50 lines; are there any (apart from cycles) that reach 100 lines?

[QUOTE=schickel;242923]That is the [I]flattest[/I] plateau I think I've seen....[/QUOTE]

That probably isn't too rare... this one isn't as long or flat, but it's on the same sequence, at about the same height:

I've seen 75 lines at height 41 and 74 lines at height 99 (for 147192).

...92 lines in [URL="http://factordb.com/aliquot.php?type=1&aq=754432&big=1"]754432[/URL] (i431-522)

645428
 

schickel pointed this sequence out to me because someone (probably the DB workers) had left it with a downdriver at 101 digits on line 1174. I took it on, and although the original downdriver was lost at 56 digits, more downdrivers eventually dropped it to the 7-digit low of 1639820. The sequence beginning with this number was already at 110 digits in the DB. That sequence is now a side-sequence of 645428. I've added a few lines from there, and the [url=http://factordb.com/sequences.php?se=1&eff=2&aq=645428&action=last20&fr=0&to=100]sequence[/url] is now at 112 digits, line 2747, with 2^3 * 3 * 5^2 :ouch1:. I'll release it if ECM doesn't split the current c104.

[QUOTE=10metreh;243506]schickel pointed this sequence out to me because someone (probably the DB workers) had left it with a downdriver at 101 digits on line 1174. I took it on, and although the original downdriver was lost at 56 digits, more downdrivers eventually dropped it to the 7-digit low of 1639820. The sequence beginning with this number was already at 110 digits in the DB. That sequence is now a side-sequence of 645428. I've added a few lines from there, and the [URL="http://factordb.com/sequences.php?se=1&eff=2&aq=645428&action=last20&fr=0&to=100"]sequence[/URL] is now at 112 digits, line 2747, with 2^3 * 3 * 5^2 :ouch1:. I'll release it if ECM doesn't split the current c104.[/QUOTE]

Cool! According to my merge-finder script:

645428.1959 merges with 354204.83

That's at the value 3279634, which is just one step before the low point of that dip. So you do get to cross one more off the <1M list before the end of the year. :w00t:

[QUOTE=bchaffin;243640]Cool! According to my merge-finder script:

645428.1959 merges with 354204.83

That's at the value 3279634, which is just one step before the low point of that dip. So you do get to cross one more off the <1M list before the end of the year. :w00t:[/QUOTE]

So there was a merge after all... :party:
That was one last Christmas present, unless I can pack another one in within the next few days...