%I A028335 N0189
%S A028335 1,1,2,3,4,6,6,10,19,27,33,39,157,183,386,664,687,969,1281,1332,2917,
%T A028335 2993,3376,6002,6533,6987,13395,25962,33265,39751,65050,227832,258716,
%U A028335 378632,420921,895932,909526,2098960,4053946
%N A028335 Number of digits in n-th Mersenne prime.
%C A028335 Apply p->floor(p*log(2)/log(10))+1 to A000043.
%D A028335 N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 
               (includes this sequence).
%D A028335 A. H. Beiler, Recreations in the Theory of Numbers, Dover, NY, 1964, 
               p. 19.
%H A028335 C. K. Caldwell, <a href="http://www.utm.edu/research/primes/mersenne/
               index.html">Mersenne Primes</a>
%Y A028335 See A000043, which is the main entry for this sequence. Cf. A000688.
%Y A028335 Sequence in context: A034890 A009490 A064778 this_sequence A007464 A064764 
               A123131
%Y A028335 Adjacent sequences: A028332 A028333 A028334 this_sequence A028336 A028337 
               A028338
%K A028335 nonn,base
%O A028335 1,3
%A A028335 N. J. A. Sloane (njas(AT)research.att.com).
%E A028335 More terms from Enoch Haga (Enokh(AT)comcast.net), Dec 18 2001
%E A028335 One more term from Harry J. Smith (hjsmithh(AT)sbcglobal.net), Apr 17 
               2003
%E A028335 4053946 from Omar E. Pol (info(AT)polprimos.com), Oct 28 2007