20080124, 18:15  #45  
May 2007
Kansas; USA
2×23×233 Posts 
Quote:
Jasong is unreserving Riesel base 4 k=16734. He is working on another unrelated effort. This also unreserves Riesel base 2 oddn k=8367 and Riesel base 16 k=16734. Gary 

20080124, 18:17  #46 
May 2007
Kansas; USA
2·23·233 Posts 
Jasong has unreserved Riesel base 4 k=16734 per a post that I just now put in the reservations/statuses thread.
This also unreserves Riesel base 16 k=16734 and the Riesel base 2 oddn conjecture of k=8367. I have changed the above post accordingly. Gary Last fiddled with by gd_barnes on 20080124 at 18:21 
20080124, 20:12  #47  
May 2004
FRANCE
2^{2}×3×7^{2} Posts 
Unreserving k=19464
Quote:
I reserved k=19464 because I believed falsely it might be tested for Riesel odd n's (but 19463 is prime), so, I wish to unreserve it. I tested it up to n = 262032 base 2, then I created a base 4 sieve file up to n=1048576 (1024K) base 4. I will make it available to users by attaching it here. It is sieved up to 49.58 billions. Regards, Jean 

20080124, 20:45  #48 
May 2004
FRANCE
2^{2}×3×7^{2} Posts 
Riesel odd n's : 3 new k's eliminated.
3 new primes found :
130383 104123 260766*2^1041221 is prime! Time : 71.272 sec. 131727 169621 263454*2^1696201 is prime! Time : 79.613 sec. 135567 68325 271134*2^683241 is prime! Time : 23.265 sec. 20 k's remaining now... Also, for Sierpinski base 4 / odd n's, I completed the test of k = 9267 up to 2,000,000 base 2 (the very last n is 1999615), no prime... so, I am unreserving this k. Jean 
20080125, 20:56  #49 
May 2007
Kansas; USA
2×23×233 Posts 
I'm reserving Riesel base 4 k=13854, 16734, and 19464 for further testing up to about n=250K base 4. I'll sieve to n=500K and leave my files for others if no primes are found on one or more of the k's.
It will also be the same k's for Riesel base 16. Karsten, this also means I'll be reserving k=6927 and 8367 for the Riesel base 2 oddn conjecture. Gary 
20080125, 20:57  #50 
May 2007
Kansas; USA
29DE_{16} Posts 
Riesel oddn reservations
Karsten,
Part of a post from the reservations thread... I'm reserving Riesel base 4 k=13854, 16734, and 19464 for further testing up to about n=250K base 4. This also means I'll be reserving k=6927 and 8367 for the Riesel base 2 oddn conjecture and taking them to n=500K base 2. Gary 
20080125, 22:10  #51  
A Sunny Moo
Aug 2007
USA (GMT5)
3·2,083 Posts 
Quote:


20080126, 10:06  #52  
May 2007
Kansas; USA
2×23×233 Posts 
Quote:
Let k=2m and let n=q 2m*4^q1 = 2m*2^(2q)1 = m*2^(2q+1)1 Hence where the base is 4 and k=2m, then where the base is 2, n must be 2q+1; hence odd. In this case, k=13854 and k=16734 base 4 equate to k=6927 and k=8367 base 2 oddn. It's surprising how tricky it has been to keep all of our reservations clean and consistent across all bases without stepping on one another; namely the bases that are powers of 2. Edit: One more requirement...the k base 4 cannot be divisible by 4 in order to 'reduce' to a base 2 oddn k. The evenn and oddn conjectures have a requirement that the k must be odd and divisible by 3 or...as shown on my pages k==3 mod 6. Gary Last fiddled with by gd_barnes on 20080126 at 10:12 

20080126, 16:20  #53  
A Sunny Moo
Aug 2007
USA (GMT5)
6249_{10} Posts 
Quote:


20080127, 14:12  #54 
Oct 2006
103_{16} Posts 

20080128, 08:39  #55 
May 2007
Kansas; USA
2·23·233 Posts 
A big one drops for oddn...
From the 'regular' primes thread:
Base 2 oddn: 8367*2^3137051 I'm still working on Base 2 oddn k=6927. I'm currently at n=324K base 2. Gary 
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