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A093166 Primes of the form 80*R_n + 3, where R_n is the repunit (A002275) of length n. 1
3, 83, 883, 88883, 88888883, 888888883, 888888888888883, 888888888888888888888888888888888888888888888888883, 88888888888888888888888888888888888888888888888888888888888888888888883 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

COMMENTS

Primes of the form (8*10^n-53)/9 [From Vincenzo Librandi, Nov 16 2010]

CROSSREFS

Cf. A056694 (corresponding n).

Sequence in context: A036943 A178001 A173811 * A111648 A013518 A166241

Adjacent sequences:  A093163 A093164 A093165 * A093167 A093168 A093169

KEYWORD

nonn

AUTHOR

Rick L. Shepherd (rshepherd2(AT)hotmail.com), Mar 26 2004

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Last modified February 16 21:51 EST 2012. Contains 205978 sequences.