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A179030 Primes whose only prime digits are 7's. 1
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)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..50.

CROSSREFS

Cf. A179031.

Sequence in context: A124965 A253973 A200080 * A179031 A107178 A061722

Adjacent sequences:  A179027 A179028 A179029 * A179031 A179032 A179033

KEYWORD

nonn,base

AUTHOR

Lekraj Beedassy, Jun 25 2010

EXTENSIONS

Corrected by Ray Chandler, Jul 13 2010

STATUS

approved

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Last modified January 25 03:49 EST 2020. Contains 331241 sequences. (Running on oeis4.)