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 A144487 Primes of the form 2^n+15. 8
 17, 19, 23, 31, 47, 79, 271, 1039, 2063, 4111, 32783, 65551, 4194319, 8388623, 67108879, 1073741839, 4294967311, 1099511627791, 4398046511119, 70368744177679, 2305843009213693967, 4722366482869645213711, 75557863725914323419151 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Vincenzo Librandi, Table of n, a(n) for n = 1..37 MATHEMATICA Select[2^Range[0, 200]+15, PrimeQ] (* Vladimir Joseph Stephan Orlovsky, Feb 03 2012 *) Select[Table[2^n + 15, {n, 1, 300}], PrimeQ] (* Vincenzo Librandi, Feb 23 2014 *) PROG (PARI) {for(n=0, 72, if(isprime(k=2^n+15), print1(k, ", ")))} (MAGMA)[a: n in [1..100] | IsPrime(a) where a is 2^n+15]; // Vincenzo Librandi, Feb 23 2014 CROSSREFS Cf. A057197 (numbers n such that 2^n + 15 is prime). [From Klaus Brockhaus, Dec 11 2008] Sequence in context: A205700 A228070 A289685 * A108266 A102325 A231326 Adjacent sequences:  A144484 A144485 A144486 * A144488 A144489 A144490 KEYWORD nonn,easy AUTHOR Vincenzo Librandi, Dec 09 2008 EXTENSIONS Edited by Klaus Brockhaus and R. J. Mathar, Dec 10 2008 Definition simplified by Jon E. Schoenfield, Jun 17 2010 STATUS approved

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Last modified May 14 03:33 EDT 2021. Contains 343872 sequences. (Running on oeis4.)