EDITED A095862

Maximilian Hasler maximilian.hasler at gmail.com
Thu Nov 29 13:23:24 CET 2007


%I A095862
%S A095862 1,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79,83,89,97,121,
%T A095862 169,289,361,529,841,961,1003,1006,1007,1011,1018,1027,1037,1041,1042,
%U A095862 1043,1046,1047,1055,1057,1059,1067,1073,1077,1079,1081,1082,1094,1099
%N A095862 Numbers n such that number of decimal digits of n = number
of divisors of n.
%C A095862 An element of this sequence is prime iff it has 2 digits,
which is the case for a(2)=11 through a(22)  ; sequence A096489 lists
exactly these and the leading term a(1)=1 (the only noncomposite
number which is not prime). - M. Hasler, Nov 29 2007
%Y A095862 Cf. A096489 (= a(1)..a(22) = noncomposite elements of this sequence).
%Y A095862 Cf. A135772-A135779 (analogon for bases 2..9).
%Y A095862 Adjacent sequences: A095859 A095860 A095861 this_sequence
A095863 A095864 A095865
%Y A095862 Sequence in context: A096489 A008364 A120533 this_sequence
A125845 A108871 A078875
%K A095862 base,nonn
%O A095862 1,2
%A A095862 Ray Chandler (rayjchandler(AT)sbcglobal.net), Jun 28 2004
%E A095862 Edited by Maximilian F. Hasler
(Maximilian.Hasler(AT)gmail.com), Nov 29 2007





More information about the SeqFan mailing list