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A036938
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Smallest n-digit prime containing only digits 2 and 7, or 0 if no such prime exists.
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1
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2, 0, 227, 2777, 22277, 272227, 2227727, 22227277, 222222227, 2222222777, 22222222277, 222222272777, 2222222227727, 22222222777277, 222222222222227, 2222222222227727, 22222222222227227, 222222222227227727
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,1
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LINKS
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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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