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A109292 Numbers k such that the string k235723572357 is prime. 0
5, 8, 44, 82, 83, 118, 157, 160, 163, 176, 179, 197, 199, 206, 229, 239, 242, 250, 251, 269, 293, 298, 304, 307, 331, 335, 337, 346, 358, 373, 388, 412, 422, 461, 478, 479, 485, 499, 500, 505, 527, 554, 557, 565, 566, 569, 590, 619, 632, 643, 646, 649, 656 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..53.

EXAMPLE

If k=5 then k235723572357 = 5235723572357 (prime).

If k=83 then k235723572357 = 83235723572357 (prime).

MATHEMATICA

f[n_] := ToExpression[ToString[n] <> "235723572357"]; Do[If[PrimeQ[f[n]], Print[n]], {n, 1, 1000}] (* Ryan Propper, Sep 14 2005 *)

CROSSREFS

Sequence in context: A130223 A126750 A256401 * A275571 A192379 A117474

Adjacent sequences:  A109289 A109290 A109291 * A109293 A109294 A109295

KEYWORD

nonn,base

AUTHOR

Parthasarathy Nambi, Aug 20 2005

EXTENSIONS

More terms from Ryan Propper, Sep 14 2005

STATUS

approved

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Last modified November 30 17:31 EST 2020. Contains 338807 sequences. (Running on oeis4.)