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 2009-01-22, 16:31 #45 gd_barnes     May 2007 Kansas; USA 22·3·883 Posts 1667*2^365342-1 is prime
 2009-01-22, 17:23 #46 MyDogBuster     May 2008 Wilmington, DE 22×23×31 Posts 1655*2^365228-1 is prime 1601*2^365302-1 is prime
 2009-01-22, 17:55 #47 henryzz Just call me Henry     "David" Sep 2007 Liverpool (GMT/BST) 3·5·397 Posts 1 out of the last 17 primes hasnt been 1600-1700 amazing:surprised
 2009-01-22, 18:54 #48 Flatlander I quite division it     "Chris" Feb 2005 England 31×67 Posts 1587*2^365549-1 1603*2^364139-1 Confirmed primes.
 2009-01-23, 00:18 #49 Flatlander I quite division it     "Chris" Feb 2005 England 31×67 Posts 1683*2^366866-1 is prime.
 2009-01-23, 07:06 #50 gd_barnes     May 2007 Kansas; USA 245448 Posts 1941*2^365467-1 is prime 1637*2^368470-1 is prime
 2009-01-23, 07:09 #51 gd_barnes     May 2007 Kansas; USA 22×3×883 Posts Brucifer found: 1635*2^366428-1 is confirmed prime LaurenU2 found: 1463*2^368756-1 is confirmed prime 1561*2^369477-1 is confirmed prime
2009-01-23, 07:13   #52
gd_barnes

May 2007
Kansas; USA

22·3·883 Posts

Quote:
 Originally Posted by henryzz 1 out of the last 17 primes hasnt been 1600-1700 amazing:surprised
Make that 1 out of the last 17 NEW primes hasn't been k=1600-1700.

Now it's: 18 out of the last 20 NEW primes HAS been k=1600-1700 and the other 2 have been k=1900-2000.

(I don't like negative logic. lol)

Somewhere in there are some k=1400-1600 & k=1700-1900 new primes I'm sure. Those areas are far from having been fully searched already, especially the k=1700-1900 range. We're slowly getting a higher percentage of new primes as we get higher. Above n=375K, the previously known primes drops dramatically. That's why I'm very excited by the prospects for the rally!

Gary

 2009-01-23, 08:57 #53 gd_barnes     May 2007 Kansas; USA 1059610 Posts The streak of k=1600-1700 & 1900-2000 new primes will finally end and with a vengence!... Flatlander, Laurenu2, and PCZ all have new primes!
 2009-01-23, 10:15 #54 MyDogBuster     May 2008 Wilmington, DE 22×23×31 Posts 1727*2^370942-1 is a confirmed prime
 2009-01-23, 10:20 #55 em99010pepe     Sep 2004 2·5·283 Posts user=em99010pepe [2009-01-23 00:24:42] 1527*2^366989-1 is prime! Time : 31033.0 sec. (confirmed) user=PCZ [2009-01-23 00:53:05] 1953*2^370639-1 is prime! Time : 1469.0 sec. (new)

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