mersenneforum.org Aliquot sequences that start on the integer powers n^i
 Register FAQ Search Today's Posts Mark Forums Read

2022-01-20, 19:00   #1409
garambois

"Garambois Jean-Luc"
Oct 2011
France

809 Posts

Quote:
 Originally Posted by EdH This was just too interesting to me not to share. Aliquot sequence 71^87 term 3 shed 74 digits in its single step to term 4. More like this would be nice.
This is indeed rare and worth noting !
I had fun a long time ago to "make" such strange aliquot sequences of which here is an example !
We start with 7317 digit terms and divide the number of digits by two at each iteration.
I even think I could "make" some pretty funny aliquot sequences of similar types.
For example one that would start with a term of 8000 digits, and whose second term would have 7000 digits, and whose third term would have 6000 digits, ...

2022-01-20, 23:45   #1410
EdH

"Ed Hall"
Dec 2009

33×167 Posts

Quote:
 Originally Posted by garambois This is indeed rare and worth noting ! I had fun a long time ago to "make" such strange aliquot sequences of which here is an example ! We start with 7317 digit terms and divide the number of digits by two at each iteration. I even think I could "make" some pretty funny aliquot sequences of similar types. For example one that would start with a term of 8000 digits, and whose second term would have 7000 digits, and whose third term would have 6000 digits, ...
I suspected, but hadn't played with such. Finding one in the wild was interesting. That's for the link.

 2022-01-21, 21:09 #1411 EdH     "Ed Hall" Dec 2009 Adirondack Mtns 33×167 Posts Base 71 is ready to be "tabled." Ir's all initialized with remaining cofactors >99 dd. It has one merge: Code: 71^8:i2066 merges with 1578:i1856 Moving to the high end of 968. . .
 2022-01-22, 08:42 #1412 garambois     "Garambois Jean-Luc" Oct 2011 France 11001010012 Posts OK Ed, a lot of thanks !
 2022-01-22, 18:16 #1413 garambois     "Garambois Jean-Luc" Oct 2011 France 809 Posts I reserve the base 77 for initialization.
 2022-01-22, 18:53 #1414 RichD     Sep 2008 Kansas 357110 Posts Base 99 can be added at the next update. I'll start on base 97 next.
 2022-01-22, 19:46 #1415 garambois     "Garambois Jean-Luc" Oct 2011 France 32916 Posts Fantastic ! Thank you very much !
 2022-01-22, 20:15 #1416 EdH     "Ed Hall" Dec 2009 Adirondack Mtns 33×167 Posts Current Reservations of Tables Not Yet On Page Since uninitialized tables aren't added to the page, there's no reservation reference (unless I'm just missing it). I'd like to use this post to try to keep track and provide a central point for reference. I'll try to edit this post whenever a table is added to the main pages or a new one reserved. Base Reservations for Table Being Initialized: Code: All covered by main page. No further updates here. From time to time, I'll transfer this info to a newer post, so it will still be easily found. As far as I can tell, the following bases <100 are uninitialized: Code: Ditto. Last fiddled with by EdH on 2022-03-20 at 23:26 Reason: Continuing updates
 2022-01-23, 09:22 #1417 garambois     "Garambois Jean-Luc" Oct 2011 France 809 Posts Thank you very much Edwin for this initiative ! Updating and adding several bases takes me several hours and I can't do it very often anymore because of the large number of sequences there are now in the project and also because of my workload. I remind you that the next update will take place on the weekend of February 5th and 6th. As far as I'm concerned, you have to add the 88 base I'm currently working on, I'm initializing it. To my knowledge, the bases <100 on which nobody is working are : 70, 76, 78, 80, 82, 83, 84, 85, 86, 87, 89, 90, 91, 92, 93, 94, 95, 96, 98.
2022-01-23, 14:10   #1418
EdH

"Ed Hall"
Dec 2009

106358 Posts

Quote:
 Originally Posted by garambois . . . As far as I'm concerned, you have to add the 88 base I'm currently working on, I'm initializing it. To my knowledge, the bases <100 on which nobody is working are : 70, 76, 78, 80, 82, 83, 84, 85, 86, 87, 89, 90, 91, 92, 93, 94, 95, 96, 98.
Base 70 is also ready to be "tabled." See post 1402, which leads me to think that I'll rewrite my post to flag those bases that are finished as well, until they are added to the project pages. That should help a little.

Thanks Jean-Luc!

 2022-01-23, 14:28 #1419 garambois     "Garambois Jean-Luc" Oct 2011 France 14518 Posts Thank you very much Edwin. Indeed, it is very clear like that !

 Similar Threads Thread Thread Starter Forum Replies Last Post fivemack FactorDB 46 2021-02-21 10:46 schickel FactorDB 18 2013-06-12 16:09 garambois Aliquot Sequences 34 2012-06-10 21:53 Andi47 FactorDB 21 2011-12-29 21:11 schickel mersennewiki 0 2008-12-30 07:07

All times are UTC. The time now is 03:37.

Wed May 25 03:37:15 UTC 2022 up 41 days, 1:38, 0 users, load averages: 2.01, 1.93, 1.95