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A036932
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Smallest n-digit prime containing only digits 1 and 5, or 0 if no such prime exists.
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1
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5, 11, 151, 1151, 11551, 115151, 1111151, 15511151, 111151511, 1111115111, 11111151551, 111111111511, 1111111155151, 11111111511151, 111111111155111, 1111111111155151, 11111111111115151, 111111111115151551
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OFFSET
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1,1
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LINKS
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MATHEMATICA
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Table[SelectFirst[FromDigits/@Tuples[{1, 5}, n], PrimeQ], {n, 20}] (* Harvey P. Dale, Aug 04 2019 *)
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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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EXTENSIONS
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STATUS
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approved
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