good decision
 

after finding 2 primes for k=209 and changing to k=297 only testing about 80 n over night here is another prime:
297*2^583464-1 (175643 digits) (actual llr at 584k)

Congrats to all of you on nice, large primes! :cool:

[Recently I appear in this thread only to congratulate the others on their primes... :w00t:]

We are waiting for your k=7 prime :wink:

Finally a prime, from the 5th Drive, submitted together with BlisteringSheep:

129*2^690893-1 is prime! (207982 digits)

I'm also waiting for the next k=7 prime, for more than 3 years now! Currently approaching 1.95M.

Congrats to Sheep-- I'm happy to see him get credit on top 5000 for all the sieve work he's done for us.
My big sieve is done to 105T now because of him, and I'm starting my megabit hunt this week. It took me 5 months to sieve to 27T, Sheep 5 weeks to do the other 78T. I am both envious and thankful. When I find a megabit, Sheep gets half credit.
-Curtis

9613*2^636159-1 (191507 digits)

Actually I was hoping to find some prime for this k near n=2M, but what the hell :wink:
864316301*2^1055106-1 (317628 digits)

2073*2^421538-1 (126899 digits)

From the 5th drive:

117*2^697458-1 (209958 digits)

199*2^531357-1 (159957 digits)

k=861 missing primes
 

In looking for heavy-weight k's < 2145 to test, I found k=741 and k=861 that stood out. Unfortunately k=741 is reserved (great k Karsten!) :smile: and k=861 has already been tested deeply. In doing so, I checked the top-5000 site for k=861 and found the following primes that are missing from our summary site:

861*2^70689-1 found 8/2000
861*2^630463-1 found 9/2006
861*2^645393-1 found 9/2006

Unfortunately it's not clear how high this k has been tested.


Gary