%I
%S 1,4,7,20,22,27,32,37,48,68,122,128,148,152,155,159,160,198,216,217,
%T 239,247,248,306,363,429,475,515,606,651,823,1491,1774,1923,2153,2469,
%U 2838,2891,2944,3015,3032,3242,3594,4896,5458,5491,5913,6030
%N Numbers n such that n#*2^n+1 is prime, where n# = product of primes <= n.
%C The values 1491 through 6030 have been proved prime; 6030#*2^6030+1 has 4386 decimal digits.
%H OpenPFGW Project, <a href="http://www.primeform.net/openpfgw/">Primality Tester</a>.
%Y Cf. A034386.
%K nonn
%O 1,2
%A _Jason Earls_, Jun 24 2003
