[QUOTE=lalera;433377]hi,
i would like to get a list of valid bases for b=100  200 i want to do them to n=10000  maybe higher[/QUOTE] 100 (10^2) also should be skipped. 
1 Attachment(s)
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). 
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[/CODE] and then I sieved the smaller ones (up to 1432) to n<=10000 and started pfgw. After a few minutes only b=640, 688, 1388 survived. I guess, I will reserve b=640, 688 to n <= 30000 for starters, now. 
hi,
please do reserve for me base 28, n=1000 to 30000 
Completed to n=600,000. No new primes and continuing.

hi,
please do reserve for me b=60, n=1000 to 30000 b=62, n=1000 to 30000 
hi,
dereserveing base 6 
Complete to 625,000 and continuing. (2^621443+1)^22 is the only new prime and was reported in the other thread.

hi,
status update for carol / kynea b=74, n=69000 to 78000 no prime continuing 
Completed to n=650,000. No new primes and continuing.

hi,
dereserveing base 74 
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