20180101, 06:36  #1 
6809 > 6502
"""""""""""""""""""
Aug 2003
101×103 Posts
9478_{10} Posts 
Predict "M51"
With M50 found and only the official announcement awaiting, let's guess M51 (specifically, the next, currently unknown, Mersenne Prime yet to be noticed by a human.)
THE RULES OF THE GAME:
All previous guesses from other threads must be specifically restated. Absurd guesses may be ignore it any statistical reports or graphs. Rules may be clarified later. New rules for the next game may be suggested in this thread. GAME ON! 
20180101, 08:48  #2 
"Serge"
Mar 2008
Phi(4,2^7658614+1)/2
5·1,877 Posts 
110691517
6192022 (optimistic, I know) 
20180101, 09:42  #3 
Sep 2003
5033_{8} Posts 
282,362,693
March 3, 2025 
20180101, 10:53  #4 
Jun 2003
3×23×71 Posts 
85833733 20181115
98760853 20200420 115218151 20220701 
20180101, 15:20  #5 
Einyen
Dec 2003
Denmark
2^{2}×13×59 Posts 
I'll redo my guess from the M50 thread:
99116189 20191128 
20180101, 15:46  #6 
Jul 2009
Germany
547 Posts 
(2^83018113) 1
June, 9th 2018 somewhere in that range ..... Last fiddled with by moebius on 20180101 at 15:49 
20180102, 03:29  #7  
P90 years forever!
Aug 2002
Yeehaw, FL
2^{3}·5^{2}·37 Posts 
Quote:
Code:
1257787 (last Slowinski prime) 1856192 2739294 4042540 5965819 8804116 12992763 19174200 28296517 41758868 61626067 90945284 134213412 198066786 292299040 431363231 636588601 

20180102, 04:12  #8 
1976 Toyota Corona years forever!
"Wayne"
Nov 2006
Saskatchewan, Canada
2·11^{2}·19 Posts 
99,999,703
April 3, 2023 
20180102, 10:00  #9 
"Composite as Heck"
Oct 2017
1100010101_{2} Posts 
344587487, 20250715
I know it's probably too large to be M51 proper, but it'll be M51(?) if it's the next one discovered ;) 
20180102, 14:01  #10 
"Victor de Hollander"
Aug 2011
the Netherlands
10010011000_{2} Posts 
93,939,421
16 December 2021 
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