%I A090517
%S A090517 2,9,12,13,28,19,7,27,12,13,17,74,17,14,82,66,36,44,9,36,21,13,9,90,7,
%T A090517 19,149,51,321,35,12,14,140,13,28,42,34,36,153,155,133,46,73,106,162,
%U A090517 109,122,42,62,422,29,231,38,34,340,295,151,197,94,19,17,83,131,66,36
%N A090517 Least k such that floor[(10^n)/k] is prime.
%e A090517 a(1) = 2 as 10/2 = 5 is a prime. a(3) = 12 as floor[1000/12] = 83 is 
               prime.
%Y A090517 Cf. A090518, A090519, A090520.
%Y A090517 Sequence in context: A083159 A041335 A042147 this_sequence A092191 A030376 
               A080520
%Y A090517 Adjacent sequences: A090514 A090515 A090516 this_sequence A090518 A090519 
               A090520
%K A090517 base,nonn
%O A090517 1,1
%A A090517 Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Dec 07 2003
%E A090517 Corrected and extended by Mohammed Bouayoun (bouyao(AT)wanadoo.fr), Jan 
               28 2004
%E A090517 Further terms from David Wasserman (wasserma(AT)spawar.navy.mil), Dec 
               20 2005