20190420, 03:48  #1  
Mar 2006
Germany
13·229 Posts 
Do not post your results here!
This thread is for results posted in this subforum but should belong to their own topics!
DO NOT POST YOUR RESULTS HERE!  Quote:
Last fiddled with by kar_bon on 20201202 at 01:05 

20190723, 20:21  #2 
Feb 2019
97 Posts 
update on 4*3^n+1 sequence
See here:
https://www.mersenneforum.org/showpo...&postcount=150 search will of course continue after I reach n=1M. Last fiddled with by matzetoni on 20190723 at 20:21 
20190804, 04:14  #3 
"99(4^34019)99 palind"
Nov 2016
(P^81993)SZ base 36
3577_{10} Posts 
Currently Williams MM 268 was tested to n=400K with no prime found, see CRUS.
Done. Last fiddled with by kar_bon on 20190805 at 06:57 Reason: Done 
20190927, 16:00  #4 
"99(4^34019)99 palind"
Nov 2016
(P^81993)SZ base 36
6771_{8} Posts 
See post https://mersenneforum.org/showpost.p...&postcount=760, 4*789^149139+1 is prime, you can update it to https://www.rieselprime.de/ziki/Prot..._bases_least_n

20191001, 19:03  #5 
"99(4^34019)99 palind"
Nov 2016
(P^81993)SZ base 36
6771_{8} Posts 
5*326^400785+1 is also prime.

20191107, 20:28  #6 
"99(4^34019)99 palind"
Nov 2016
(P^81993)SZ base 36
7^{2}·73 Posts 
Searched "Williams PP" (b+1)*b^n+1 for all 2<=b<=12^3 and 1<=n<=12^3
All numbers in this file are written in duodecimal, not including b = 1 mod 3 since for these b, all such numbers are divisible by 3 Currently, I am also running Williams MM, MP and PP for all 2<=b<=12^3 and 1<=n<=12^3 
20191107, 20:41  #7 
"99(4^34019)99 palind"
Nov 2016
(P^81993)SZ base 36
7^{2}·73 Posts 
I also searched 2*b^n1 (Riesel k=2), 2*b^n+1 (Proth k=2), 3*b^n1 (Riesel k=3) and 3*b^n+1 (Proth k=3) for 2<=b<=12^3 and 1<=n<=12^3, all numbers in these text files are written in duodecimal

20191107, 20:44  #8  
"99(4^34019)99 palind"
Nov 2016
(P^81993)SZ base 36
7^{2}×73 Posts 
Quote:


20191109, 01:29  #9 
"99(4^34019)99 palind"
Nov 2016
(P^81993)SZ base 36
7^{2}×73 Posts 

20191110, 01:22  #10 
"99(4^34019)99 palind"
Nov 2016
(P^81993)SZ base 36
7^{2}·73 Posts 
Well, I updated these two files for Williams MP for bases 1025<=b<=2049 (only searched to n=1024) in October, both are in decimal notation, why you deleted them?
Last fiddled with by sweety439 on 20191110 at 01:23 
20191114, 11:52  #11 
"99(4^34019)99 palind"
Nov 2016
(P^81993)SZ base 36
7^{2}×73 Posts 
Williams MM 268 has searched by CRUS to n=400K, but currently the "Notes" for the page https://www.rieselprime.de/ziki/Williams_prime_MM_least only show "Base 268: Conjectures 'R Us at 100k", it should be "Base 268: Conjectures 'R Us at 400k" (this base is only searched to 200K in the page http://harvey563.tripod.com/wills.txt), also, for Williams MM 478, R478 is started for CRUS: see post https://mersenneforum.org/showpost.p...postcount=1983

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