Report top-5000 primes for k=1003-3000 - Page 5

gd_barnes · 2009-01-22, 16:31

1667*2^365342-1 is prime

MyDogBuster · 2009-01-22, 17:23

1655*2^365228-1 is prime

1601*2^365302-1 is prime

henryzz · 2009-01-22, 17:55

1 out of the last 17 primes hasnt been 1600-1700
amazing:surprised

Flatlander · 2009-01-22, 18:54

1587*2^365549-1
1603*2^364139-1
Confirmed primes.

Flatlander · 2009-01-23, 00:18

1683*2^366866-1 is prime.

gd_barnes · 2009-01-23, 07:06

1941*2^365467-1 is prime
1637*2^368470-1 is prime

gd_barnes · 2009-01-23, 07:09

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

gd_barnes · 2009-01-23, 07:13

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

gd_barnes · 2009-01-23, 08:57

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!

MyDogBuster · 2009-01-23, 10:15

1727*2^370942-1 is a confirmed prime

em99010pepe · 2009-01-23, 10:20

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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2009-01-22, 16:31	#45
gd_barnes May 2007 Kansas; USA 10,709 Posts	1667*2^365342-1 is prime

2009-01-22, 17:23	#46
MyDogBuster May 2008 Wilmington, DE 2²×23×31 Posts	16552^365228-1 is prime 16012^365302-1 is prime

2009-01-22, 17:55	#47
henryzz Just call me Henry "David" Sep 2007 Liverpool (GMT/BST) 2⁵·11·17 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	15872^365549-1 16032^364139-1 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 10,709 Posts	19412^365467-1 is prime 16372^368470-1 is prime

2009-01-23, 07:09	#51
gd_barnes May 2007 Kansas; USA 24725₈ Posts	Brucifer found: 16352^366428-1 is confirmed prime LaurenU2 found: 14632^368756-1 is confirmed prime 1561*2^369477-1 is confirmed prime

2009-01-23, 08:57	#53
gd_barnes May 2007 Kansas; USA 10,709 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] 15272^366989-1 is prime! Time : 31033.0 sec. (confirmed) user=PCZ [2009-01-23 00:53:05] 19532^370639-1 is prime! Time : 1469.0 sec. (new)