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A069684 Primes with either no internal digits or all internal digits are 9. 17
2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 191, 193, 197, 199, 293, 397, 491, 499, 593, 599, 691, 797, 991, 997, 1993, 1997, 1999, 2999, 4993, 4999, 6991, 6997, 7993, 8999, 19991, 19993, 19997, 49991, 49993, 49999 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..55.

CROSSREFS

Cf. A069675, A069676, A069677, A069678, A069679, A069680, A069681, A069682, A069683.

Sequence in context: A069681 A069682 A069683 * A061022 A238852 A079152

Adjacent sequences:  A069681 A069682 A069683 * A069685 A069686 A069687

KEYWORD

nonn,base

AUTHOR

Amarnath Murthy, Apr 06 2002

EXTENSIONS

Corrected by Ray Chandler, Nov 24 2003

Offset corrected and name changed by Arkadiusz Wesolowski, Sep 07 2011

STATUS

approved

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Last modified May 24 17:37 EDT 2017. Contains 286997 sequences.