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 A261456 Prime numbers whose sum of digits is not a power of 2. 1
 3, 5, 7, 19, 23, 29, 37, 41, 43, 47, 59, 61, 67, 73, 83, 89, 109, 113, 127, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, 199, 223, 227, 229, 239, 241, 257, 263, 269, 271, 281, 283, 293, 307, 311, 313, 317, 331, 337, 347, 353, 359, 373 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Complement of A068807 with respect to primes. LINKS Felix Fröhlich, Table of n, a(n) for n = 1..10000 MATHEMATICA Select[Prime@Range[80], !IntegerQ[Log[2, Plus@@IntegerDigits[#]]] &] (* Vincenzo Librandi, Aug 19 2015 *) PROG (PARI) lista(nn) = forprime (n=1, nn, sd = sumdigits(n); if (2^valuation(sd, 2) != sd, print1(n, ", "))); \\ Michel Marcus, Aug 19 2015 (Magma) [p: p in PrimesUpTo(400) | not PrimeDivisors(s) eq [2] where s is &+Intseq(p)]; // Vincenzo Librandi, Aug 19 2015 CROSSREFS Cf. A007605, A068807. Sequence in context: A074106 A002261 A263257 * A154524 A184805 A079131 Adjacent sequences: A261453 A261454 A261455 * A261457 A261458 A261459 KEYWORD nonn,base AUTHOR Altug Alkan, Aug 19 2015 STATUS approved

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Last modified September 26 09:40 EDT 2023. Contains 365655 sequences. (Running on oeis4.)