20201001, 18:13  #529 
Sep 2003
5×11×47 Posts 
The 348th fullyfactored or probablyfullyfactored Mersenne number with prime exponent (not including the Mersenne primes themselves) is M4349.
The most recent factor (41 digits) was found by Ryan Propper on September 30 and the PRP test was done by mnd9. FactorDB link. 
20201007, 01:00  #530  
Sep 2003
101000011001_{2} Posts 
Quote:
Edit: now it's certified. Last fiddled with by GP2 on 20201007 at 03:58 

20201217, 01:23  #531 
Sep 2003
5×11×47 Posts 
The 349th fullyfactored or probablyfullyfactored Mersenne number with prime exponent (not including the Mersenne primes themselves) is M1489.
The most recent factor (60 digits) was found by nordi on December 17 (UTC) and the PRP test was also done by nordi. There are 7 factors in all, plus the cofactor. FactorDB link. 
20201217, 06:33  #532 
Romulan Interpreter
"name field"
Jun 2011
Thailand
2^{4}×613 Posts 

20201217, 09:06  #533 
Jun 2003
2^{2}·1,301 Posts 
Please reread posts 508511
Last fiddled with by axn on 20201217 at 09:07 
20201217, 09:12  #534 
Romulan Interpreter
"name field"
Jun 2011
Thailand
2650_{16} Posts 
Yes Sir!
(now, I am worrying... I am fxcking getting older and stupider! I could not remember that discussion, before rereading it!) Edit: hey Mike/Serge! (only you can touch posts without letting fingerprints). I remember for sure that my "size approximations" (mental calculation) was like "~300 digits" which I wrote there, and for sure I didn't make it so accurate, haha. If I would have done it so accurate, by either computing the cofactor or looking for it, then the "~" sign ("about") would have had no sense. The cofactor is indeed 235 digits (just checked FDB). So, one of you decided to fix my approximation, or I am getting nuts for real? Last fiddled with by LaurV on 20201217 at 09:21 
20201217, 09:21  #535 
Jun 2003
2^{2}×1,301 Posts 

20201217, 12:46  #536  
Feb 2017
Nowhere
5,147 Posts 
Quote:
As to getting older, you simply have to live with it. You can not live with the alternative. As to "stupider," that's not the right adjective. "More forgetful," particularly of things in the near past, almost certainly. Back in the days of the Usenet, when I suddenly realized I simply wasn't remembering things in the way I had long taken for granted, I posted to the effect that "The thing I forget that gets me in the most trouble is, I keep forgetting that my memory isn't as good as it used to be."^{†} I got a very gratifying response: "It's not nice to make people spray coffee all over their monitors." If only I remembered recent things that well... ^{†}For the edification of younger denizens of the Forum, who have yet to experience what I'm talking about, what I meant by this was that, I often still counted on my memory being as good as it had been, even though it wasn't, and that I consequently failed to do things because I had forgotten them, whereas previously I would have remembered. I had to learn to compensate for this distressing change in circumstances. In the context of online discussions, it meant that it was a good idea to scan earlier posts on a given topic before Nowadays, it is almost second nature to make out a shopping list before heading out on a shopping trip. This really helps, except for when (a) I get to my first stop, and realize I left the list at home, or (b) I bring the list, but forget to consult it. 

20201217, 12:54  #537 
Undefined
"The unspeakable one"
Jun 2006
My evil lair
2×23×137 Posts 
... or (c) you forgot where the shops are and where your house is and spend the rest of your life sleeping on the park bench wondering who you are.

20201217, 14:50  #538  
Feb 2017
Nowhere
5147_{10} Posts 
Quote:
It occurs to me that this would be a great way to put off inquiries as to the location of your evil lair: "I've forgotten!" 

20201217, 15:04  #539 
6809 > 6502
"""""""""""""""""""
Aug 2003
101×103 Posts
10127_{10} Posts 
I know where it is (at least within a 840km radius circle.)
Last fiddled with by Uncwilly on 20201217 at 15:04 
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