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A110583 Numbers n such that the string 888n is prime. 0
7, 11, 13, 17, 19, 43, 53, 61, 67, 73, 83, 97, 103, 109, 133, 143, 157, 161, 163, 179, 203, 211, 247, 257, 263, 271, 287, 313, 319, 323, 359, 361, 373, 389, 397, 409, 413, 427, 431, 443, 451, 457, 469, 479, 493, 499, 533, 541, 557, 623, 631, 637, 653, 659, 661 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

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

EXAMPLE

If n=73 then 888n = 88873 (prime).

MATHEMATICA

Select[Range[1000], PrimeQ[FromDigits[Join[{8, 8, 8}, IntegerDigits[#]]]]&]  (* Harvey P. Dale, Mar 28 2011 *)

CROSSREFS

Sequence in context: A176834 A098414 A293201 * A270999 A103486 A086843

Adjacent sequences:  A110580 A110581 A110582 * A110584 A110585 A110586

KEYWORD

nonn,base

AUTHOR

Parthasarathy Nambi, Sep 12 2005

EXTENSIONS

More terms from Vincenzo Librandi, Mar 27 2010

STATUS

approved

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Last modified April 9 10:52 EDT 2020. Contains 333348 sequences. (Running on oeis4.)