mersenneforum.org Some Somewhat Easier n^i Sequences Available for Termination
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2022-07-29, 00:24   #617
gd_barnes

"Gary"
May 2007
Overland Park, KS

22·13·227 Posts

Quote:
 Originally Posted by EdH Base 120 was brought up by sweety a few posts back in the other thread. That exchange was the only mention I recall. It's certainly doable. RichD is working on 104 because I didn't know the status of 102. I'd like to fill that gap in also. Since 120 is of interest, let's initialize it to see what happens. Then, maybe we can fill in 102. Let's see what your next assessment shows. We may want to initialize the mixed parity before terminating the matched for some of these.
For some reason, I thought that Jean-Luc had brought it up some time ago somewhere here. I could be wrong. I'll work on 120 with the idea of filling in 102 after that.

I forgot to mention that the termination of 167^77 completes base 167 up to 180 digits!

 2022-07-29, 00:56 #618 gd_barnes     "Gary" May 2007 Overland Park, KS 22×13×227 Posts Since there aren't a lot of sequences remaining starting at <= 150 digits, I'll go ahead and list sequences remaining by base for <= 155 digits. For <= 160 digits, there are so many bases with 1 or 2 sequences remaining that the information by base isn't useful. Therefore I won't bother with listing it. Details can be provided if wanted. Starting size <= 155 digits: 1 remain: Bases 21, 23, 26, 33, 39, 40, 44, 46, 52, 54, 68, 69, 82, 84, 86, 88, 91, 92, 96, 105, 191, 199, 210, 227, 229, 231, 241, 288, 1058, 1184, 14264, 14288, 19116, 31704 2 remain: 22, 24, 30, 78, 87, 306, 648, 882, 1210 3 remain: 28, 94 4 remain: 20
 2022-07-29, 01:40 #619 gd_barnes     "Gary" May 2007 Overland Park, KS 22×13×227 Posts 173^71 and 179^71 terminate
 2022-07-29, 02:17 #620 EdH     "Ed Hall" Dec 2009 Adirondack Mtns 23×653 Posts Now that you mention it again, I think you are right about 120. I seem to remember Jean-Luc posting it was brought up before, but I don't remember the discussion at that time. I'll finish my current list, which is probably all in your lists and then move to any remaining 144, 145, 146, etc. I'm a little confused, but will study your posts a bit more tomorrow. There are several 144s and a 143 in your 146-150 list. I'll catch up on terminations tomorrow as well.
2022-07-29, 05:38   #621
gd_barnes

"Gary"
May 2007
Overland Park, KS

22×13×227 Posts

Quote:
 Originally Posted by EdH Now that you mention it again, I think you are right about 120. I seem to remember Jean-Luc posting it was brought up before, but I don't remember the discussion at that time. I'll finish my current list, which is probably all in your lists and then move to any remaining 144, 145, 146, etc. I'm a little confused, but will study your posts a bit more tomorrow. There are several 144s and a 143 in your 146-150 list. I'll catch up on terminations tomorrow as well.
The lists are by starting sequence size. Notice how I showed "starting size" in various places of the lists that I made. The current size can vary widely. It is the starting sequence size that everything is sorted by when showing bases that remain of a certain size in all of the lists.

Example: 239^73 is at 147/141 right now but its starting sequence size is 173. So it will not appear in any of the lists that I posted until you get up to 175 digits or more. So it would have been included in the counts for the lists I made earlier of sequences with starting size <= 180 digits but not in the lists for <= 150 or <= 155, etc.

I feel that we need to use the starting sequence size for goal setting-like this. Otherwise anyone can just arbitrarily drop any sequence to a current size of < 145 digits, and say to you..."Well...we don't have that goal accomplished anymore". :-)

In this manner, when all sequences of starting size <= 150 digits are done, they are done for good. Currently all starting size < 143 digits are done. (94^72 starting size 143 digits currently at 142/142 is the smallest.) When we do the 4 sequences that I listed including 94^72 that are starting size <= 145 digits, then all < 146 digits will be done. Then there's the 14 sequences in the 146-150 list that will accomplish a <= 150 digits goal...at least two of them are in your list that are being worked on right now.

We can continue right on up the line in this way. There's nothing saying that we can't also do a sequence like 239^73 right away simply because its current size is manageable. It still helps towards the eventual <= 180 digits goal.

Last fiddled with by gd_barnes on 2022-07-29 at 05:57

 2022-07-29, 10:29 #622 gd_barnes     "Gary" May 2007 Overland Park, KS 22·13·227 Posts 191^65, 199^65, and 227^65 terminate
 2022-07-29, 12:29 #623 EdH     "Ed Hall" Dec 2009 Adirondack Mtns 23×653 Posts OK, now I think I'm on the right page. I'm still working through my current list and then I'll move to working the ones in your <145 list and see where we get from there. 229^65 should be available to terminate by noon today. I'm hoping 239^73 will fall somewhat easily as well. 241^63 will fight to the end, though.
 2022-07-29, 15:56 #624 EdH     "Ed Hall" Dec 2009 Adirondack Mtns 23·653 Posts Fresh from the farm. Grab it before it's gone! Code: 229^65 90/90
2022-07-29, 17:30   #625
richs

"Rich"
Aug 2002
Benicia, California

161410 Posts

Quote:
 Originally Posted by EdH Fresh from the farm. Grab it before it's gone! Code: 229^65 90/90
I'll run it

2022-07-29, 17:33   #626
richs

"Rich"
Aug 2002
Benicia, California

2·3·269 Posts

Quote:
 Originally Posted by richs I'll run it
Well, that was quick! 229^65 terminated by me.

 2022-07-29, 17:44 #627 EdH     "Ed Hall" Dec 2009 Adirondack Mtns 23·653 Posts It actually hung on longer than I thought it would. Thanks!

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