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 2016-05-30, 23:19 #67 rogue     "Mark" Apr 2003 Between here and the 3×31×71 Posts (2^621443+1)^2-2 is prime! At 374176 digits, it is a about 14,000 digits short of the Top 5000.
 2016-05-31, 01:13 #68 Batalov     "Serge" Mar 2008 Phi(4,2^7658614+1)/2 23·1,229 Posts Arrgh! Still a very decent number!
2016-05-31, 02:49   #69
paulunderwood

Sep 2002
Database er0rr

10000001100102 Posts

Quote:
 Originally Posted by rogue (2^621443+1)^2-2 is prime! At 374176 digits, it is a about 14,000 digits short of the Top 5000.
Congrats. The next one will be in the top5000.

 2016-06-01, 01:51 #70 Batalov     "Serge" Mar 2008 Phi(4,2^7658614+1)/2 23·1,229 Posts (2482^18735+1)^2-2 is prime. Now we only have two bases b=1656 (n<=70000) and b=2634 (n<=66000) that have no known primes under b<=3000. ____ EDIT: updated their search limits. Last fiddled with by Batalov on 2016-06-18 at 19:01
2016-06-03, 14:03   #71
a1call

"Rashid Naimi"
Oct 2015
Remote to Here/There

1000110000112 Posts

Quote:
 Originally Posted by rogue I've started this thread to capture Carol / Kynea primes. Use this thread to post reservations. Please go here to get a complete list of Carol and Kynea primes. You can continue to post new primes in this thread.
I have taken the liberty of setting up the following short redirect, should anyone care to use it:

http://ckps.19.lc

If there is an objection I will cancel the redirection.

Preferably by at least a PM.

Last fiddled with by a1call on 2016-06-03 at 14:04

 2016-06-06, 15:40 #72 lalera     Jul 2003 2·307 Posts hi, here are the results for carol / kynea b=60, n=1000 to 30000 (60^1717+1)^2-2 (60^3882+1)^2-2 (60^6665-1)^2-2 (60^11307+1)^2-2 (60^11549-1)^2-2 b=62, n=1000 to 30000 (62^1573-1)^2-2 (62^2183+1)^2-2 (62^3818+1)^2-2 (62^8800+1)^2-2 (62^11080-1)^2-2 (62^13352+1)^2-2 (62^17625+1)^2-2
 2016-06-14, 21:17 #73 rogue     "Mark" Apr 2003 Between here and the 3×31×71 Posts (2^653490 - 1)^2 - 2 is prime! It will be in the 3700 range after it is verified. Last fiddled with by rogue on 2016-06-14 at 21:17
2016-06-14, 21:40   #74
paulunderwood

Sep 2002
Database er0rr

2·3·691 Posts

Quote:
 Originally Posted by rogue (2^653490 - 1)^2 - 2 is prime! It will be in the 3700 range after it is verified.
Congrats on a top5000 near-square prime

 2016-06-18, 13:05 #75 rogue     "Mark" Apr 2003 Between here and the 3·31·71 Posts (2^661478+1)^2-2 is prime at 398250 digits.
2016-06-18, 14:39   #76
paulunderwood

Sep 2002
Database er0rr

2×3×691 Posts

Quote:
 Originally Posted by rogue (2^661478+1)^2-2 is prime at 398250 digits.
Congrats again

 2016-06-28, 05:29 #77 wombatman I moo ablest echo power!     May 2013 22×449 Posts For base 26: Code: (26^74387-1)^2-2 is 3-PRP! (1279.8199s+0.0082s) Still working to n=100,000.

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