20180605, 08:36  #1860 
Feb 2003
3×5×127 Posts 
From our 7th drive:
2895*2^17620111 (530422 digits) 
20180621, 05:15  #1861 
"Curtis"
Feb 2005
Riverside, CA
2·3·719 Posts 
13*2^43330871 is prime. 1304391 digits.
My first over 4 million. 
20180621, 07:41  #1862 
Romulan Interpreter
Jun 2011
Thailand
2^{5}×3×7×13 Posts 

20180621, 07:50  #1863 
May 2009
Russia, Moscow
4646_{8} Posts 
Nice prime, VBCurtis. Welcome to the club!

20180621, 22:27  #1864 
Dec 2011
After milion nines:)
1342_{10} Posts 

20180625, 19:46  #1865 
Sep 2002
Database er0rr
2×1,699 Posts 
Congrats to Michael aka VBCurtis on finding the 2,057,890 digit prime, 127*2^68361531: http://primes.utm.edu/primes/page.php?id=125404 For how long have you been testing k=127? Last fiddled with by paulunderwood on 20180625 at 19:58 
20180625, 22:39  #1866 
"Curtis"
Feb 2005
Riverside, CA
2·3·719 Posts 
Well, it's not confirmed yet...
I've run k=127 for many years; ten or so, I would guess. Since ~1M, I don't quite recall. The machine that made the discovery is a friend's office computer; it was found last August, but I only check the machine once a year or so. Whoops! Edit: I went and found the post: April 2007, from 1M up. http://mersenneforum.org/showpost.ph...&postcount=565 Last fiddled with by VBCurtis on 20180625 at 22:42 
20180626, 05:04  #1867  
Sep 2002
Database er0rr
2·1,699 Posts 
It is now. Congrats!
Quote:


20180707, 23:38  #1868 
Nov 2003
E26_{16} Posts 
Hi Curtis,
Congrats on great primes! 13*2^43330871 127*2^68361531 
20180803, 08:45  #1869 
Feb 2003
3·5·127 Posts 
From our 7th drive:
2415*2^18016151 (542344 digits) 
20180813, 08:31  #1870 
Feb 2003
3·5·127 Posts 
265*2^20511551 (617462 digits)
217*2^20926731 (629960 digits) 215*2^21319881 (641795 digits) 241*2^21352791 (642786 digits) 
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