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A104069 Primes of the form 2^n+31. 0
47, 4127, 68719476767, 3599131035634557106248430806148785487095757694641533306480604458089470064537190296255232548883112685719936728506816716098566612844395439751206812144692131084107807 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

COMMENTS

Associated values of n are 4, 12, 36, 540, 844, 1192,...  - M. F. Hasler, Nov 13 2010

MATHEMATICA

a = Delete[Union[Flatten[Table[If [PrimeQ[2^n + 31] == True, 2^n + 31, 0], {n, 1, 400}]]], 1]

PROG

(MAGMA) [ a: n in [0..750] | IsPrime(a) where a is 2^n+31] [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Nov 13 2010]

(PARI) for(n=0, 999, ispseudoprime(p=2^n+31) & print1(p", "))  \\  [From M. F. Hasler, Nov 13 2010]

CROSSREFS

Sequence in context: A052463 A005148 A123798 * A194617 A141797 A101629

Adjacent sequences:  A104066 A104067 A104068 * A104070 A104071 A104072

KEYWORD

nonn,bref

AUTHOR

Roger Lee Bagula (rlbagulatftn(AT)yahoo.com), Mar 02 2005

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Last modified February 16 03:44 EST 2012. Contains 205860 sequences.