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A074223 Numbers n such that ceiling(n^e) is prime. 1
2, 6, 7, 10, 12, 24, 30, 40, 53, 56, 76, 83, 85, 88, 96, 100, 106, 112, 117, 118, 122, 128, 136, 137, 147, 157, 172, 175, 193, 217, 244, 248, 264, 330, 334, 343, 356, 361, 405, 406, 411, 416, 435, 450, 462, 495, 501, 503, 504, 505, 532, 534, 535, 537, 548, 575 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 1..2000

EXAMPLE

Ceiling(2^e) = 7, which is prime, so 2 is in the sequence.

MATHEMATICA

Select[Range[600], PrimeQ[Ceiling[#^E]]&] (* Harvey P. Dale, Aug 09 2016 *)

PROG

(MAGMA) [n: n in [1..600] | IsPrime(Ceiling(n^Exp(1)))]; // Vincenzo Librandi, Dec 19 2016

CROSSREFS

Sequence in context: A179883 A179303 A030309 * A029459 A014862 A180626

Adjacent sequences:  A074220 A074221 A074222 * A074224 A074225 A074226

KEYWORD

nonn

AUTHOR

Jon Perry, Sep 17 2002

STATUS

approved

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Last modified March 19 15:02 EDT 2019. Contains 321330 sequences. (Running on oeis4.)