Taking S182

S220
 

S220 tested n=100K-200K - Nothing found

Results emailed - Base released

S128 / S512 update
 

[QUOTE=rogue;278928]Taking these based upon the file I posted weeks ago.[/QUOTE]

I've done half of the tests in the range to n=6.3M. No luck (yet). At about 10 per day it gives me about 3 months of work left, unless I add more cores to it.

S247
 

Reserving S247 to n=25K

On recommended list

will take R207 from 2.5k to 5k


and please find here the abcd for R22 between 500k-600k (sieved up to 733e9;3656*22^n-1)

firejuggler,

Please refer to the reservation pages ([URL="http://www.noprimeleftbehind.net/crus/Riesel-conjecture-reserves.htm"]Riesel[/URL] [URL="http://www.noprimeleftbehind.net/crus/Sierp-conjecture-reserves.htm"]Sierpinski[/URL]) prior to sieving, this will save you a lot of duplicate work.

Puzzle-Peter has R22 reserved to 1M and the sieve file on the reservation page is sieved to 50T.

my bad, stopping the sieving now... I still intend to go with R207.

R207, 165 k found, 622 k remain, n=5096, will go to n=10k ( will eventually reach 25 k in time)

R213
 

R213 tested n=100K-200K - Nothing found

Results emailed - Base released

status update on R207, tested up to 10k
273 k removed ,514 k left

trivia
[code]
16*207^7899-1 is prime
16*207^8199-1 is prime
[/code]
going to 15k

R221
 

R221 tested n=100K-200K - Nothing found

Results emailed - Base released