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A089366 Smallest prime whose digital product is >= n. 0

%I

%S 2,2,3,5,5,7,7,19,19,29,29,29,29,29,29,29,29,29,37,37,37,47,47,47,47,

%T 47,47,47,59,59,59,59,59,59,59,59,59,59,59,59,59,59,59,59,59,79,79,79,

%U 79,79,79,79,79,79,79,79,79,79,79,79,79,79,79,89,89,89,89,89,89,89,89,89

%N Smallest prime whose digital product is >= n.

%C If a(n+1) >a(n) = a(n-1) then the digital product of a(n) = n.

%t With[{t={#,Times@@IntegerDigits[#]}&/@Prime[Range[30]]},Transpose[ Flatten[Table[Select[t,Last[#]>=n&,1],{n,80}],1]][[1]]] (* _Harvey P. Dale_, Oct 12 2011 *)

%K base,easy,nonn

%O 0,1

%A _Amarnath Murthy_, Nov 07 2003

%E More terms from _David Wasserman_, Sep 15 2005

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Last modified May 7 22:52 EDT 2021. Contains 343652 sequences. (Running on oeis4.)