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A104066 Primes of the form 2^n+7. 7
11, 23, 71, 263, 1031, 65543, 262151, 1048583, 268435463, 1073741831, 274877906951, 17592186044423, 302231454903657293676551, 309485009821345068724781063, 316912650057057350374175801351 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

MATHEMATICA

a = Delete[Union[Flatten[Table[If [PrimeQ[2^n + 7] == True, 2^ n + 7, 0], {n, 1, 400}]]], 1]

PROG

(MAGMA) [ a: n in [0..250] | IsPrime(a) where a is 2^n+7 ] [From Vincenzo Librandi, Jan 26 2011]

CROSSREFS

Cf. A057195 (numbers n such that 2^n+7 is prime). [From Klaus Brockhaus (klaus-brockhaus(AT)t-online.de), Mar 14 2009]

Sequence in context: A139905 A102273 A195463 * A184394 A060160 A158021

Adjacent sequences:  A104063 A104064 A104065 * A104067 A104068 A104069

KEYWORD

nonn

AUTHOR

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

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Last modified February 15 14:37 EST 2012. Contains 205822 sequences.