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A036942 Smallest n-digit prime containing only digits 3 and 7, or 0 if no such prime exists. 1

%I #11 Mar 09 2020 09:12:59

%S 3,37,337,3373,33377,333337,3333373,33333373,333337777,3333733373,

%T 33333333377,333333733333,3333333377377,33333333373777,

%U 333333333337337,3333333333373777,33333333333337337,333333333333337333

%N Smallest n-digit prime containing only digits 3 and 7, or 0 if no such prime exists.

%H Jinyuan Wang, <a href="/A036942/b036942.txt">Table of n, a(n) for n = 1..500</a>

%Y Cf. A020463, A036229, A036316.

%K nonn,base

%O 1,1

%A _Patrick De Geest_, Jan 04 1999

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Last modified July 10 01:34 EDT 2024. Contains 374191 sequences. (Running on oeis4.)