20190119, 07:59  #155 
May 2007
Kansas; USA
17·617 Posts 
Base 15 all exponents <= 102 is complete to at least size 102, cofactor 97. Highlights:
All odd exponents have terminated. Merges as previously posted: 15^4, 15^8, 15^18, 15^28, and 15^42 Even exponent terminations as previously posted: 15^6, 15^10, 15^14, and 15^36 Additional termination: 15^22 terminates at term 1375 with P=1361 after reaching 65 digits. New cycle: 15^74 terminates in a cycle at term 1705 with C=6 after reaching 88 digits. The base is released. 
20190119, 17:39  #156 
"Garambois JeanLuc"
Oct 2011
France
677 Posts 
OK, page updated.
Thank you to all ! Bases 15 and 82589933 added. @gd_barnes : Bases 14 and 15 released. I replaced 15^8 term 77 merges with 147150 term 7 by 15^8 term 77 merges with 147150 term 17 My own calculations : 3^232 up to 120 digits. Poor week for my calculations, only aliquot sequences with drivers like 2^2 * 7 ! 
20190122, 00:00  #157 
May 2007
Kansas; USA
17×617 Posts 
Some additional work done on base 15:
15^98 had a downdriver at a large size so I continued it. It dropped all the way to 9 digits and so narrowly missed a merge. I added 1048 terms to it. It is now at i=1070, size 106, C97. 15^103 trivially terminated after a short run. No more work to be done on base 15. Last fiddled with by gd_barnes on 20190122 at 00:00 
20190122, 00:10  #158 
May 2007
Kansas; USA
17×617 Posts 
I have nominated myself as the "consistency police". I noticed that all except a few of the bases > 2 have all exponents listed up thru and including the first trivial exponent > 120 digits. Only bases 12, 28, and 439 are missing that final trivial exponent.
Based on this, I trivially terminated the following sequences: 12^112 28^84 439^47 Would it make sense to go ahead and add these to the page? I suggest it because I think it will be interesting to show percentage of exponents terminated/cycled by base in the future to look for patterns. To do this accurately, all bases would need a consistent stopping point. Last fiddled with by gd_barnes on 20190122 at 00:11 
20190124, 19:56  #159 
May 2007
Kansas; USA
17×617 Posts 
6^113 terminates after reaching 103 digits.

20190126, 00:31  #160 
May 2007
Kansas; USA
17×617 Posts 
I extended many unreserved sequences that did not have drivers or had a small cofactor. Several had substantial extensions. Here is a list of the extended sequences:
5^124 6^53 6^83 6^99 6^101 6^113 (Terminated as previously reported!) 6^119 6^123 6^125 7^82 7^88 7^98 7^106 7^116 10^51 10^75 10^89 10^93 10^95 10^97 11^72 12^63 12^69 12^71 12^93 13^42 13^48 13^50 13^78 13^88 14^77 15^44 15^82 15^88 If any more info is needed, let me know. No reservations. Most (all) unreserved sequences without drivers should be at >= 105 digits now. :) 
20190127, 10:43  #161 
"Garambois JeanLuc"
Oct 2011
France
677 Posts 
OK, page updated.
Thank you to all and especially to gd_barnes. @gd_barnes : 12^112 added 28^84 added 439^47 added You're right, it's much cleaner like this ! Congratulations for the nontrivial calculation of 6^113. My own calculations : 3^210216218 up to 120 digits. Last week, it was 3^212 and no 3^232 of course ! And (10^10+19)^15 trivially terminated after a few days. 
20190128, 08:06  #162 
May 2007
Kansas; USA
17×617 Posts 
Since the project goal is to search these sequences to 120 digits, I loaded up all remaining unreserved sequences that were at 118 or 119 digits and searched them to >= 120 digits. Here they are:
5^168 5^170 6^151 7^140 11^114 13^104 14^103 15^100 No reservations. Now you can add a little more color to the page. 
20190131, 14:21  #163 
May 2018
43 Posts 
Hi, I noticed that in sequence 3^108, in factordb, the 1575th term is wrong. Can somebody correct it?
It should be 15540084064757285981320 instead of 15539970862145288285320. I've written the factordb thread. Last fiddled with by ricky on 20190131 at 14:48 
20190131, 17:35  #164 
Apr 2010
Over the rainbow
3×5^{3}×7 Posts 
82589933^2 reached 120 digits, 2^2*7 driver, C111
82589933^4 reached 120 digits, 2^4*3, reached 2^8*3^2 during its course, C107 82589933^6 reached 126 digits, 2^3 *3^2, C109 82589933^8 reached 103 digits,2*3 driver 82589933^10 reached 109 digits, 2^5*3*7 , C100 82589933^12 reached 107 digits 2^3*3^3, C101 82589933^14 reached 105 digits, 2*3 driver, C101 82589933^16 reached 122 digits, 2^4 * 3 * 7, C118 relasing 82589933^2 and 82589933^4. Will probably work a few more iteration on 82589933^6, will continue work on others. Last fiddled with by firejuggler on 20190131 at 17:36 
20190202, 00:10  #165 
May 2007
Kansas; USA
17×617 Posts 
An extension to my most recent post: I loaded up all remaining unreserved sequences that were at 116 or 117 digits and searched them to >= 120 digits. Here they are:
5^166 6^147 6^149 7^58 7^138 10^115 11^100 11^110 14^99 14^101 All previous size >= 116 sequences are now at size >= 120 digits. (except reserved base 3) No reservations. More color for the page. 
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