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A176922 Primes of the form 2^n+23. 2
31, 151, 549755813911, 604462909807314587353111 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 1..8

FORMULA

a(n) = 2^A057203(n)+23. [R. J. Mathar, Jun 18 2010]

MATHEMATICA

Select[Table[2^n + 23, {n, 0, 750}], PrimeQ] (* Vincenzo Librandi Jan 02 2014 *)

PROG

(MAGMA) [a: n in [0..750] | IsPrime(a) where a is 2^n+23];

CROSSREFS

Sequence in context: A201964 A226890 A104049 * A134553 A042880 A042882

Adjacent sequences:  A176919 A176920 A176921 * A176923 A176924 A176925

KEYWORD

nonn

AUTHOR

Vincenzo Librandi, Apr 29 2010

STATUS

approved

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Last modified March 26 20:47 EDT 2019. Contains 321535 sequences. (Running on oeis4.)