20151022, 07:10  #1 
"Åke Tilander"
Apr 2011
Sandviken, Sweden
2×283 Posts 
Today it is 1000 Days since last Mersenne Prime
Today is a notable day since it is 1000 days since we last discovered a Mersenne Prime. Attached you find a table of number of days between discoveries:
So what do you think, will there be another 1000 days before we see next Mersenne Prime? My personal guess is that it will take a total of more then 3000 days, but less then 10000 before we see next Mersenne Prime, starting counting from 20130125. Last fiddled with by aketilander on 20151022 at 07:21 
20151022, 07:35  #2 
Oct 2015
2×7×19 Posts 
I'll guess within the next week*.
*answer given to within 5 years 
20151022, 20:25  #3 
"Curtis"
Feb 2005
Riverside, CA
2^{3}×3^{2}×61 Posts 

20151022, 22:59  #4 
Account Deleted
"Tim Sorbera"
Aug 2006
San Antonio, TX USA
17·251 Posts 

20151023, 01:45  #5  
Oct 2015
2·7·19 Posts 
Quote:
So until all the previous LL checks are double/triple checked we won't know for sure that some prime number hater isn't just sneakily providing false residuals for the prime numbers and hoping they don't get double checked. 

20151023, 16:09  #6 
Einyen
Dec 2003
Denmark
5627_{8} Posts 
I hope we find one before 1384 days which is the current (sad) record. That is a record we do not want to break, which means we need to find the next one before Nov 10th 2016, 20:33:52 UTC.
http://www.mersenneforum.org/showpos...&postcount=387 Here is a "countup" since M57885161: http://www.timeanddate.com/countdown...2C885%2C161%29 Code:
M(1398269) Nov 13 1996 M(2976221) Aug 24 1997 +284 days M(3021377) Jan 27 1998 +156 days M(6972593) Jun 1 1999 +490 days M(13466917) Nov 14 2001 +897 days M(20996011) Nov 17 2003 +733 days M(24036583) May 15 2004 +180 days M(25964951) Feb 18 2005 +279 days M(30402457) Dec 15 2005 +300 days M(32582657) Sep 4 2006 +263 days M(43112609) Aug 23 2008 +719 days M(37156667) Sep 6 2008 +14 days M(42643801) Apr 12 2009 +218 days M(57885161) Jan 25 2013 +1384 days  +5917 days (=455.15 days average) 
20151023, 20:03  #7 
Jun 2015
Vallejo, CA/.
3^{2}·107 Posts 
Well although I may be stating the obvious, it really does not depend so much on our productivity as perhaps in the gap (ratio) between primes. Suppose for a moment we have an exponent gap Ratio of 521/127 like we had between the 12th and 13th Mersenne prime.
That would put the next prime in the vecinity of 2^237,000,000 and I would assume that would take us, barring some kind of miracle, well into the 2030's or late 2020's. So I may be way out of line but rather than discovering a new mersenne prime what would be ideal is that we do a thorugh job of completing the 100,000,000 milestone. Of course if we do that and there is a prime M_{n} 58,500,000 >n> 100,000,000 that will be discovered too. 
20151024, 00:37  #8 
6809 > 6502
"""""""""""""""""""
Aug 2003
101×103 Posts
7·29·43 Posts 
Where did you get the exact dates for the early discoveries? The wiki could use some updating.

20151024, 03:57  #9  
Serpentine Vermin Jar
Jul 2014
29·113 Posts 
Quote:
http://www.mersenne.org/report_milestones/ 

20151024, 05:35  #10  
6809 > 6502
"""""""""""""""""""
Aug 2003
101×103 Posts
7×29×43 Posts 
Quote:


20151024, 11:25  #11  
"Åke Tilander"
Apr 2011
Sandviken, Sweden
2×283 Posts 
Quote:
I have used the dates from https://en.wikipedia.org/wiki/Mersenne_prime If there are any wrong dates there it would, of course, be good if they could be corrected, also adding the best, most reliable source as a reference. Last fiddled with by aketilander on 20151024 at 11:28 

Thread Tools  
Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
http://www.mersenne.ca/status/ NOT updated in 3 days  petrw1  mersenne.ca  3  20190303 15:27 
Sad Milestone: 1200 (now 1800+) days since last prime  Aillas  Prime Sierpinski Project  76  20150528 02:32 
Twin Prime Days, Prime Day Clusters  cuBerBruce  Puzzles  3  20141201 18:15 
NEW MERSENNE PRIME! LARGEST PRIME NUMBER DISCOVERED!  dabaichi  News  561  20130329 16:55 
The 40th known Mersenne prime, 2209960111 is not PRIME!  illmanq  Miscellaneous Math  33  20040919 05:02 