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 A156059 Composite numbers whose binary representation reads as decimal prime. 2
 185, 247, 253, 295, 329, 355, 405, 425, 453, 471, 533, 539, 565, 583, 595, 671, 675, 689, 703, 755, 781, 785, 815, 841, 855, 925, 989, 1037, 1075, 1099, 1113, 1121, 1159, 1189, 1207, 1219, 1269, 1287, 1305, 1329, 1341, 1403, 1413, 1441, 1473, 1521, 1541 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Vincenzo Librandi, Table of n, a(n) for n = 1..1000 EXAMPLE 185 is composite & 10111001 is prime. 313 is not in the sequence as it is prime in base 10. MATHEMATICA Select[Range[2900], ! PrimeQ[#]&&PrimeQ[FromDigits[IntegerDigits[#, 2]]]&] (* Vincenzo Librandi, Apr 18 2013 *) CROSSREFS Cf. A065720, A007088, A036952. Sequence in context: A353388 A262053 A157297 * A244248 A129311 A252272 Adjacent sequences: A156056 A156057 A156058 * A156060 A156061 A156062 KEYWORD nonn,base AUTHOR Gerald Hillier, Feb 03 2009 EXTENSIONS More terms from R. J. Mathar, Feb 10 2009 Edited by N. J. A. Sloane, Mar 17 2010 STATUS approved

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Last modified December 5 15:27 EST 2022. Contains 358588 sequences. (Running on oeis4.)