20140630, 12:36  #122 
"Tapio Rajala"
Feb 2010
Finland
315_{10} Posts 
Thanks for the info (I did not find a reservation or statusupdate for the k with a quick search). I was planning on putting one core to crunch one lowweight, already sieved, lown k, but perhaps I'll dedicate also that core on running ECM (stage 1) on F12.
I unreserve the k=9913 then and continue slowly just with 45045. (Maybe http://www.rieselprime.de/ could be updated on k=9913). edit: on a second thought: I could reserve k=3907 (if it is not also tested to the 3M heights.. It is not complete obvious for me where I should check the reservations) Last fiddled with by rajula on 20140630 at 12:48 
20140630, 14:05  #123 
"Carlos Pinho"
Oct 2011
Milton Keynes, UK
2^{2}·5·257 Posts 
k=3907 is reserved by FreeDC Prime Search but it has been a dead project for the last year.
http://primes.utm.edu/bios/page.php?id=1820 
20140701, 07:44  #124 
Mar 2006
Germany
3×1,009 Posts 
Did you mentioned this effort in this Forum? If so, please give me a link, so I can insert it on my page. Thanks.
It's not reserved on my pages because FDC is dead for a long time, only primes found by Burt were inserted. Last fiddled with by kar_bon on 20140701 at 07:47 
20140706, 13:21  #125 
"Lennart"
Jun 2007
460_{16} Posts 
r1401
r1401 800K1.3M
Lennart 
20140722, 20:40  #126 
Just call me Henry
"David"
Sep 2007
Liverpool (GMT/BST)
1011110100100_{2} Posts 
riesel 19920911 is now upto 1.4M. n=1137978 was found to be prime
reserving the low weight: 13766 18358 19574 19826 I have them sieved to 1M. 
20160903, 12:10  #127 
Just call me Henry
"David"
Sep 2007
Liverpool (GMT/BST)
1011110100100_{2} Posts 
57821*2^n1 tested to 1M. Finished testing.
10451*2^n1 tested to 700k. Hope to reach 1M. Will check what happened with my previous reservations. 
20160903, 19:51  #128  
Just call me Henry
"David"
Sep 2007
Liverpool (GMT/BST)
2^{2}×17×89 Posts 
Quote:
Primes: Code:
13766*2^381 19574*2^121 19574*2^5881 19574*2^9121 19826*2^11861 19574*2^28921 18358*2^41191 19826*2^83861 18358*2^104071 18358*2^416791 19574*2^472081 Batalov pointed out by pm that these ks are even. Not sure how this has been missed for this long. Last fiddled with by henryzz on 20160903 at 20:20 

20160905, 05:37  #129 
Romulan Interpreter
"name field"
Jun 2011
Thailand
2829_{16} Posts 
Can they come from some 4^n or higher "crus"? As it seems most of the n's are also even, and most of the k's are 2 mod 4?

20160905, 09:23  #130 
Just call me Henry
"David"
Sep 2007
Liverpool (GMT/BST)
2^{2}·17·89 Posts 

20230208, 03:17  #131 
Jun 2003
3111_{8} Posts 
I would like to reserve 4*5^n+1
Looks like no one is working on it since 2015. I will start from scratch and double check previous work. https://www.rieselprime.de/ziki/Williams_prime_MP_5 Thanks. 
20230208, 23:23  #132 
Mar 2006
Germany
3×1,009 Posts 

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