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 2008-11-24, 13:15 #1178 Flatlander I quite division it     "Chris" Feb 2005 England 81D16 Posts 1483*2^365027-1 is prime.
 2008-11-25, 20:16 #1179 amphoria     "Dave" Sep 2005 UK 23×347 Posts 5655*2^642799-1 (193506 digits)
 2008-11-27, 10:50 #1180 Thomas11     Feb 2003 35648 Posts 1503*2^397527-1 (119671 digits) 1523*2^454040-1 (136683 digits) 1559*2^406648-1 (122417 digits) 1559*2^491984-1 (148106 digits) 1577*2^356616-1 (107356 digits) 1577*2^373062-1 (112307 digits) 1577*2^411304-1 (123819 digits) 1577*2^485232-1 (146073 digits) All 4 values of k (1503, 1523, 1559, 1577) were tested for n=350-500k.
 2008-11-27, 15:08 #1181 amphoria     "Dave" Sep 2005 UK 277610 Posts 5955*2^635277-1 (191242 digits)
 2008-11-27, 18:54 #1182 mcduck     Sep 2008 Kristiansand, Norway 3×37 Posts From the 6th drive; 205*2^1019679-1 is prime! (306957 digits) My first "mbit" prime Last fiddled with by mcduck on 2008-11-27 at 18:54 Reason: Minor edit
2008-11-27, 19:40   #1183
henryzz
Just call me Henry

"David"
Sep 2007
Cambridge (GMT/BST)

5,869 Posts

Quote:
 Originally Posted by mcduck From the 6th drive; 205*2^1019679-1 is prime! (306957 digits) My first "mbit" prime
well done now you need to go for a mdigit prime
it might be fun searching for a prime that would have 1m digits in base3 then base4 and so on

2008-11-27, 22:18   #1184
mcduck

Sep 2008
Kristiansand, Norway

3×37 Posts

Quote:
 Originally Posted by henryzz well done now you need to go for a mdigit prime
It's quite a step from 19 minutes pr test to 9-10 hours pr test

My next goal is to help as much as i can on the 6th drive, and perhaps put some cpus on the stalled 3rd drive.

 2008-11-28, 03:59 #1185 VBCurtis     "Curtis" Feb 2005 Riverside, CA 22×1,193 Posts Congrats, mcduck! If you decide to look for larger primes, we have well-sieved files for 5, 15, and 17- though the 3rd drive is also somewhere near/above 1.5mbits. -Curtis
 2008-11-29, 00:05 #1186 Flatlander I quite division it     "Chris" Feb 2005 England 31×67 Posts 1493*2^377656-1 is prime.
 2008-11-29, 03:53 #1187 segmtfault     Jun 2004 California 277 Posts From the 6th drive: 145*2^972835-1 (292855 digits) Congrats, mcduck
2008-11-29, 10:26   #1188
mcduck

Sep 2008
Kristiansand, Norway

6F16 Posts

Quote:
 Originally Posted by VBCurtis Congrats, mcduck! If you decide to look for larger primes, we have well-sieved files for 5, 15, and 17- though the 3rd drive is also somewhere near/above 1.5mbits. -Curtis
Thanks :>

For the time beeing I have decided to stay on the 6th drive. I expect to get some new hardware (intel skulltrail 8 core system) in january and will put that one to use searching for larger primes (3rd and 17).

Also, a huge thanks to those who sieved the 6th drive!

Last fiddled with by mcduck on 2008-11-29 at 10:29

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