%I A121045
%S A121045 3,11,101,1013,10141,100153,1000193,10000763,100000673,1000000933,
%T A121045 10000002713,100000005041,1000000010489,10000000003243
%N A121045 Least cluster prime greater than 10^n.
%C A121045 These numbers are useful for generating intermediate cluster primes because 
               the best algorithm for generating cluster primes requires starting 
               with a known cluster prime.
%Y A121045 Cf. A038134 (cluster primes), A039506 (number of cluster primes < 10^n), 
               A121044.
%Y A121045 Sequence in context: A072640 A154299 A007616 this_sequence A092245 A105413 
               A136985
%Y A121045 Adjacent sequences: A121042 A121043 A121044 this_sequence A121046 A121047 
               A121048
%K A121045 nonn
%O A121045 0,1
%A A121045 T. D. Noe (noe(AT)sspectra.com), Jul 21 2006