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A036936
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Smallest n-digit prime containing only digits 1 and 9, or 0 if no such prime exists.
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1
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0, 11, 191, 1999, 11119, 111119, 1111991, 11111119, 111111199, 1111111919, 11111111911, 111111199919, 1111111119919, 11111111119111, 111111111119119, 1111111111111999, 11111111111111119, 111111111111191111
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OFFSET
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1,2
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LINKS
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MATHEMATICA
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Table[SelectFirst[FromDigits/@Tuples[{1, 9}, n], PrimeQ], {n, 20}]/. Missing["NotFound"]->0 (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, May 26 2020 *)
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CROSSREFS
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KEYWORD
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nonn,base
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AUTHOR
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STATUS
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approved
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