20080524, 12:27  #56 
Sep 2004
5416_{8} Posts 

20080524, 14:00  #57 
May 2005
3×7^{2}×11 Posts 
Verification took me 32200 seconds on a 3GHz Core2

20080530, 05:28  #58 
May 2005
3×7^{2}×11 Posts 
Another k=4, b=3 prime
4*3^3536351 (168728 digits)

20080530, 06:01  #59 
Nov 2003
2·1,811 Posts 
Congrats on yet another one, very close to the one you reported a week ago.

20080530, 12:21  #60 
May 2005
11001010001_{2} Posts 
Thanks! It's time for k=2 prime

20080601, 18:45  #61 
Sep 2004
2×5×283 Posts 

20080610, 09:05  #62 
May 2005
1617_{10} Posts 

20080610, 23:10  #63 
I quite division it
"Chris"
Feb 2005
England
31×67 Posts 
Twin Prime
108615*2^110342+1 is twin prime!
Comes in at 7th place 
20080613, 01:09  #64 
Nov 2003
2×1,811 Posts 
Congrats on a nice twin!
If it's not a secret how many n's did you check? I suppose you used the approach recently suggested by Robert Smith (?) Or, how many LLR tests in total? Thanks. 
20080613, 16:11  #65  
I quite division it
"Chris"
Feb 2005
England
31×67 Posts 
Quote:
Well, I'm not sure how much to give away because I intend to search higher and I don't know how much was pure luck and how much was technique. I suspect a large amount of luck because it was found after just 220,000 candidates and 164 Riesel primes. (Just 10 days on all 4 cores at 3.18GHz, including sieving.) It's a refinement of this idea: http://mersenneforum.org/showpost.ph...68&postcount=6 I'm now searching for the No.1 twin until I find one or get bored. Probably the latter. Chris 

20080630, 01:44  #66 
Nov 2003
111000100110_{2} Posts 
A new k=27 prime by 12121:
27*2^12538701 (377454 digits) Congrats to Frank (L65)! 
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