20081124, 13:15  #1178 
I quite division it
"Chris"
Feb 2005
England
81D_{16} Posts 
1483*2^3650271 is prime.

20081125, 20:16  #1179 
"Dave"
Sep 2005
UK
2^{3}×347 Posts 
5655*2^6427991 (193506 digits)

20081127, 10:50  #1180 
Feb 2003
3564_{8} Posts 
1503*2^3975271 (119671 digits)
1523*2^4540401 (136683 digits) 1559*2^4066481 (122417 digits) 1559*2^4919841 (148106 digits) 1577*2^3566161 (107356 digits) 1577*2^3730621 (112307 digits) 1577*2^4113041 (123819 digits) 1577*2^4852321 (146073 digits) All 4 values of k (1503, 1523, 1559, 1577) were tested for n=350500k. 
20081127, 15:08  #1181 
"Dave"
Sep 2005
UK
2776_{10} Posts 
5955*2^6352771 (191242 digits)

20081127, 18:54  #1182 
Sep 2008
Kristiansand, Norway
3×37 Posts 
Last fiddled with by mcduck on 20081127 at 18:54 Reason: Minor edit 
20081127, 19:40  #1183  
Just call me Henry
"David"
Sep 2007
Cambridge (GMT/BST)
5,869 Posts 
Quote:
it might be fun searching for a prime that would have 1m digits in base3 then base4 and so on 

20081127, 22:18  #1184 
Sep 2008
Kristiansand, Norway
3×37 Posts 

20081128, 03:59  #1185 
"Curtis"
Feb 2005
Riverside, CA
2^{2}×1,193 Posts 
Congrats, mcduck!
If you decide to look for larger primes, we have wellsieved files for 5, 15, and 17 though the 3rd drive is also somewhere near/above 1.5mbits. Curtis 
20081129, 00:05  #1186 
I quite division it
"Chris"
Feb 2005
England
31×67 Posts 
1493*2^3776561 is prime.

20081129, 03:53  #1187 
Jun 2004
California
277 Posts 

20081129, 10:26  #1188  
Sep 2008
Kristiansand, Norway
6F_{16} Posts 
Quote:
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 20081129 at 10:29 

Thread Tools  
Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
POST LOTS AND LOTS OF PRIMES HERE  Kosmaj  Riesel Prime Search  1965  20210429 20:22 
Inefficient behaviour in yafu when doing large NFS with lots of threads  2147483647  YAFU  3  20161225 21:44 
Lots of roundoff errors  TheMawn  Software  18  20140816 03:54 
lots of large primes  Peter Hackman  Factoring  2  20080815 14:26 
How do I get computer to do lots of little tasks?  jasong  Information & Answers  4  20071004 20:40 