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A179030
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Primes whose only prime digits are 7's.
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2
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7, 17, 47, 67, 71, 79, 97, 107, 167, 179, 197, 467, 479, 487, 607, 617, 647, 677, 701, 709, 719, 761, 769, 787, 797, 877, 887, 907, 947, 967, 971, 977, 997, 1087, 1097, 1117, 1171, 1187, 1447, 1471, 1487, 1607, 1667, 1697, 1709, 1741, 1747, 1777, 1787, 1789
(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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Harvey P. Dale, Table of n, a(n) for n = 1..1000
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MATHEMATICA
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Select[Prime[Range[300]], MemberQ[IntegerDigits[#], 7] &&And @@ Table[FreeQ[ IntegerDigits[#], n], {n, {2, 3, 5}}] &] (* Harvey P. Dale, Sep 24 2022 *)
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CROSSREFS
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Cf. A179031.
Sequence in context: A253973 A200080 A347124 * A179031 A107178 A061722
Adjacent sequences: A179027 A179028 A179029 * A179031 A179032 A179033
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KEYWORD
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nonn,base
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AUTHOR
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Lekraj Beedassy, Jun 25 2010
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EXTENSIONS
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Corrected by Ray Chandler, Jul 13 2010
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STATUS
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approved
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