20080813, 06:03  #353 
Sep 2004
2×5×283 Posts 
287626*5^2771751 (193743 digits) is prime

20080813, 15:06  #354 
Jul 2003
wear a mask
2·7·109 Posts 
Dense k=287626
Good find! That prime will remove more than 1% of the remaining Riesel tests.
Last fiddled with by masser on 20080813 at 15:07 
20081006, 14:27  #355 
"Mark"
Apr 2003
Between here and the
2^{2}×7×13×17 Posts 
It has been a while, but I finally knocked another one off. So far this is the biggest prime on the Sierpinski side.
71098*5^319336+1 is prime! (5864.2514s+0.0470s) I'll submit it to Prime Pages later today. BTW, why is the Prime Announcement thread closed? Last fiddled with by rogue on 20081006 at 14:28 
20081006, 15:48  #356  
Jul 2003
wear a mask
2×7×109 Posts 
Quote:
Only moderators are allowed to post to the Prime Announcement thread. That thread was setup before I became a moderator  I just copy any prime announcement here to that thread; kind of redundant, I know. 

20081126, 02:24  #357 
Jul 2007
19 Posts 
99926*5^334793+1 is prime!

20081207, 19:15  #358 
Jul 2003
wear a mask
10111110110_{2} Posts 
Prime Found
Another Sierpinski prime has been found  Ralf Over, check your files please!

20081208, 16:28  #359 
Jul 2003
wear a mask
2766_{8} Posts 
rover's prime
Last fiddled with by masser on 20081208 at 16:29 
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