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A069680 Primes with either no internal digits or all internal digits are 5. 8
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, 151, 157, 251, 257, 353, 359, 457, 557, 653, 659, 751, 757, 853, 857, 859, 953, 1553, 1559, 2551, 2557, 3557, 3559, 5557, 6551, 6553, 7559, 9551, 15551, 15559, 45553 (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, A069681, A069682, A069683, A069684.

Sequence in context: A069677 A069678 A069679 * A069681 A069682 A069683

Adjacent sequences:  A069677 A069678 A069679 * A069681 A069682 A069683

KEYWORD

nonn,base

AUTHOR

Amarnath Murthy, Apr 06 2002

EXTENSIONS

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

STATUS

approved

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Last modified July 12 13:27 EDT 2020. Contains 335663 sequences. (Running on oeis4.)