20090330, 15:04  #1 
(loop (#_fork))
Feb 2006
Cambridge, England
6350_{10} Posts 
Now what (IV)
109!+1 is proceeding nicely.
10^2631 may or may not finish its linear algebra before I leave the country, but it'll certainly be done by Easter. What would you be interested in next? I don't see any very interesting but possible GNFS numbers from the Cunningham tables  most of the C180 to C185 are easier by SNFS. Siever 16e isn't yet really usable, which makes very hard SNFS jobs a bit out of reach. Possibilities are: 2^8771 (Mersenne, SNFS, a bit harder than 10^2631) 2801^791 (oddperfect, SNFS, a bit harder than 2^8771) EM43 (GNFS, people on this forum have been attacking it on and off for several years, same sort of difficulty as 5^4211 was) Something else 
20090330, 16:10  #2  
"Mark"
Apr 2003
Between here and the
13250_{8} Posts 
Quote:


20090330, 16:44  #3  
Nov 2003
16431_{8} Posts 
Quote:


20090330, 16:56  #4 
Aug 2002
Buenos Aires, Argentina
1,319 Posts 
The factorization of 10^{271}1 could help to find more prime factors of googolplex10.
Last fiddled with by alpertron on 20090330 at 16:56 
20090330, 17:57  #5  
Nov 2008
2·3^{3}·43 Posts 
Quote:


20090330, 18:02  #6 
Oct 2006
vomit_frame_pointer
2^{3}×3^{2}×5 Posts 
Heck, I'll do those two. Should be about 30 days and 25 days of sieving, respectively, on my currentlyavailable resources. I'm surprised they are still uncracked.
I'll send off a missive to Wagstaff, and grab one of these. I finished 11,227 a while ago. I thought that 11,229 was already reserved, but a glance at the Cunningham project page says it hasn't. Last fiddled with by FactorEyes on 20090330 at 18:13 
20090401, 03:19  #7 
"Mike"
Aug 2002
1D88_{16} Posts 

20090401, 06:47  #8 
Jun 2008
2^{3}·3^{2} Posts 
I'd also like to see M877 factored.
(Not sure if I'm able again to contribute...) 
20090401, 08:54  #9 
(loop (#_fork))
Feb 2006
Cambridge, England
2×5^{2}×127 Posts 
That looks a reasonable consensus for 2877. When I get back after Easter, I'll put up a reservations post; until then, please sieve 109!+1 more, so that the matrix doesn't take eight weeks.

20090401, 17:01  #10  
Jun 2005
lehigh.edu
2^{10} Posts 
Quote:
to have had 7*t50 >> t55 worth of ecm ("smallest 100 Cunninghams" list). I could add another t55 (to make p54/p55's less likely, while not ruling out p59/p60's), if that would be regarded as a worthwhile contribution? Bruce Last fiddled with by bdodson on 20090401 at 17:03 Reason: none, just trying for a 21/12/12 post (on April 1) 

20090401, 17:43  #11 
(loop (#_fork))
Feb 2006
Cambridge, England
2×5^{2}×127 Posts 
Another t55 would definitely be a worthwhile contribution, thanks very much for the offer.
