20201003, 06:28  #1024  
Nov 2016
2^{4}×157 Posts 
Quote:
Also reserve the CK for R1216, since the first bases b>1024 with unknown Sierpinski CK are 1170, 1236, 1320, but the first bases b>1024 with unknown Riesel CK are 1170, 1216, 1236, 1320 

20201003, 11:17  #1025 
Nov 2016
2^{4}×157 Posts 
The CK for S1008 is now known to be 12730554
Last fiddled with by sweety439 on 20201003 at 11:18 
20201003, 12:04  #1026 
Nov 2016
2^{4}·157 Posts 
The CK for R1216 is now known to be 13675428

20201003, 16:37  #1027 
Nov 2016
4720_{8} Posts 
The CK for S120 is now known to be 374876369

20201003, 17:19  #1028 
Nov 2016
2^{4}×157 Posts 

20201004, 05:55  #1029 
Nov 2016
4720_{8} Posts 
The CK for S630 is now known to be 24015859
The CK for R630 is now known to be 24412760 
20201004, 05:58  #1030 
Nov 2016
2^{4}×157 Posts 
Note: I only searched the primes <= 50000, and only searched (k*b^n+1)/gcd(k+1,b1) for 1<=n<=3000

20201004, 06:01  #1031 
Nov 2016
2^{4}·157 Posts 
Now, all CK for both sides for bases 2<=b<=689 (except 156 and 280) are known.
Last fiddled with by sweety439 on 20201004 at 15:13 
20201004, 06:04  #1032 
Nov 2016
2^{4}·157 Posts 

20201004, 06:06  #1033 
Nov 2016
2^{4}×157 Posts 

20201004, 06:08  #1034 
Nov 2016
2^{4}·157 Posts 
Sierpinski problem base b (b>=2): Finding and proving the smallest k such that (k*b^n+1)/GCD(k+1, b1) is not prime for all integers n >= 1
Riesel problem base b (b>=2): Finding and proving the smallest k such that (k*b^n1)/GCD(k1, b1) is not prime for all integers n >= 1 
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