20160510, 03:03  #45 
Jun 2003
2^{3}×3×193 Posts 

20160517, 03:04  #46 
Jun 2003
1001000011000_{2} Posts 
Base 12 completed to 50k. No new primes found (other than the one reported in the Prime thread). Unreserving.
Base 18 completed to 40k. No new primes. Unresereving. Here is a sieve file from 40k100k. Sieved not too deep (3e11). 
20160518, 18:14  #47 
"Serge"
Mar 2008
Phi(3,3^1118781+1)/3
9,059 Posts 
I'd quickly searched them just now. A list generated with GP was
Code:
? forstep(b=2,2000,2,if(ispower(b)>1,next);q=0;for(n=1,400,if(ispseudoprime((b^n1)^22),q=1;break);if(ispseudoprime((b^n+1)^22),q=1;break));if(!q,print1(" "b))) 368 640 688 926 970 982 1038 1270 1318 1388 1432 1452 1466 1468 1484 1614 1656 1852 1950 1992 I guess, I will reserve b=640, 688 to n <= 30000 for starters, now. 
20160519, 13:32  #48 
Jul 2003
2·3·97 Posts 
hi,
please do reserve for me base 28, n=1000 to 30000 Last fiddled with by lalera on 20160519 at 13:35 
20160521, 17:19  #49 
"Mark"
Apr 2003
Between here and the
2^{3}×5^{2}×29 Posts 
Completed to n=600,000. No new primes and continuing.

20160529, 17:29  #50 
Jul 2003
2×3×97 Posts 
hi,
please do reserve for me b=60, n=1000 to 30000 b=62, n=1000 to 30000 
20160529, 17:32  #51 
Jul 2003
2×3×97 Posts 
hi,
dereserveing base 6 
20160531, 12:06  #52 
"Mark"
Apr 2003
Between here and the
2^{3}·5^{2}·29 Posts 
Complete to 625,000 and continuing. (2^621443+1)^22 is the only new prime and was reported in the other thread.

20160607, 19:46  #53 
Jul 2003
2·3·97 Posts 
hi,
status update for carol / kynea b=74, n=69000 to 78000 no prime continuing 
20160612, 19:04  #54 
"Mark"
Apr 2003
Between here and the
2^{3}×5^{2}×29 Posts 
Completed to n=650,000. No new primes and continuing.

20160615, 10:49  #55 
Jul 2003
2×3×97 Posts 
hi,
dereserveing base 74 
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