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Syd 2011-03-24 18:44

1 Attachment(s)
162126 is still growing with the 2^3 · 3 · 5-driver, no signs it could escape, and it hit an ecm-resistant C173, t50 is done, on the way to t55.

unconnected 2011-03-25 07:31

added >2000 indexes to 813912, current status - i3834, size 112, [COLOR=Red]2*3[/COLOR]

bchaffin 2011-03-27 01:16

1 Attachment(s)
436080 gave me quite a ride, nearly 3000 terms and down to 9 digits -- but no merge.

bchaffin 2011-03-30 16:08

1 Attachment(s)
281442 was another amazing run of nearly 3000 terms, just touching 9 digits at the bottom. Again, no merge.

bchaffin 2011-04-19 20:11

1 Attachment(s)
389064 went down to 7 digits!

bchaffin 2011-04-19 20:31

Just rescanned the sequences <1M and collected some stats. Over the last 4 weeks:
[LIST][*]5125 sequences have seen some progress (55% of the 9271 open)[*]over 230000 terms have been added[LIST][*]biggest gain was 853308, which added 4123 terms[/LIST][*]cumulatively, sequences were extended by over 14700 digits (now there's a meaningless statistic for you)[/LIST]

bchaffin 2011-05-24 15:42

Another monthly update for the sequences <1M:

- 4179 sequences have been advanced
- over 173600 terms have been added
- biggest gain was in 955296, which added 5645 terms
- most digits added was also 955296, which added 35 digits (104 to 139)
- biggest decrease (aside from 6 terminations) was 1134, which dropped 16 digits

Raman 2011-06-05 12:55

Sequence [URL="http://factordb.com/sequences.php?se=1&eff=2&aq=1966080&action=last20&fr=0&to=100"][B]1966080[/B][/URL] terminates in [B]43[/B].
Had this result been known before itself? (I added it up yesterday).
Below that of 100 digit limit

So does [URL="http://factordb.com/sequences.php?se=1&eff=2&aq=2%5E118*3&action=last20&fr=0&to=100"]3.2[sup]118[/sup][/URL]
as well as [URL="http://factordb.com/sequences.php?se=1&eff=2&aq=9565938&action=last20&fr=0&to=100"]9565938[/URL]
all these sequences frequently terminate in 43

By the way, I pushed up all these following sequences
repeatedly beyond that 90 digit size again
some more than over 1000 iterations, even,
by now itself
[URL="http://factordb.com/sequences.php?se=1&eff=2&aq=2%5E164*3&action=last20&fr=0&to=100"]3.2[sup]164[/sup][/URL]
[URL="http://factordb.com/sequences.php?se=1&eff=2&aq=3333330&action=last20&fr=0&to=100"]3333330[/URL]
[URL="http://factordb.com/sequences.php?se=1&eff=2&aq=11111111112&action=last20&fr=0&to=100"]11111111112[/URL]
[URL="http://factordb.com/sequences.php?se=1&eff=2&aq=11%5E12&action=last20&fr=0&to=100"]11[sup]12[/sup][/URL]
[URL="http://factordb.com/sequences.php?se=1&eff=2&aq=2%5E171*3&action=last20&fr=0&to=100"]3.2[sup]171[/sup][/URL]
[URL="http://factordb.com/sequences.php?se=1&eff=2&aq=2%5E161*3&action=last20&fr=0&to=100"]3.2[sup]161[/sup][/URL]

[URL="http://factordb.com/sequences.php?se=1&eff=2&aq=1111110&action=last20&fr=0&to=100"]1111110[/URL] terminates exactly in 1483
[URL="http://factordb.com/sequences.php?se=1&eff=2&aq=9999990&action=last20&fr=0&to=100"]9999990[/URL] terminates within 22811

That way is some random sequence, such as 903981141
like this[COLOR=Black] [/COLOR][COLOR=White]972, 98304, 98415, 9298091736, 9663676416, 9895604649984
rather within that way 917504, 939524096, 9216, 9437184 test it out within any thing, such way[/COLOR]

bchaffin 2011-06-20 23:42

Here's the June update on the sequences under 1M:

- Two terminations (752976 and 877240) and one merge (659160)
- 3203 sequences extended, out of 9261 open
- 90500 total terms added
- Biggest gain in digits was 389064, which went from 108 to 145
- Biggest gain in terms was 862608, which added 2280 lines

kar_bon 2011-06-21 01:12

[QUOTE=Raman;263046][URL="http://factordb.com/sequences.php?se=1&eff=2&aq=1111110&action=last20&fr=0&to=100"]1111110[/URL] terminates exactly in 1483
[/QUOTE]

1111110.i0 merges with [url=http://factordb.com/sequences.php?se=1&eff=2&aq=914106&action=range&fr=0&to=10]914106.i3[/url].

It's almost useless to pick some sequences randomly above 1000000.
If it's open ended, there could exist a sequence lower than that merging with it like the above.

A seq. like 3*2^171 (= startvalue 8979466059761067529443439612208842872766049544044544 with 52 digits) has a minimum at index 80 with 49 digits -> lower than startvalue.
So this seq. merges with that one and perhaps quite lower with another one.

All open sequences < 1000000 are known and it would be better to concentrate on those first.
Higher ranges should be checked intensively for merges because this was not done before.

PS: What in heavens name is that attachment for?

schickel 2011-07-16 04:16

I've been surveying all the open sequences regularly and finally spotted this:[code]969624 616. sz 116 2^9 * 3^3 * 11 * 31 * 397[/code] [SIZE="1"](I'm assuming someone's DB workers developed this.)[/SIZE]

I decided to run this to see where it went. From capture to escape, not very far as it turned out:[code] 597 . c108 = 2^5 * 3^2 * 5 * 13
598 . c108 = 2^9 * 3^2 * 5 * 11 * 13 * 31[/code][code] 627 . c120 = 2^9 * 3^4 * 5 * 11^2 * 19 * 31
628 . c121 = 2^10 * 3^3 * 5^2 * 11^2 * 19 * 31[/code]Nice growth: 12 digits in <30 lines.....


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