Search: id:A048518
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%I A048518
%S A048518 1999,9199,338383,383833,1181881,1881181,1881811,2222929,2922229,
%T A048518 8118181,8188111,8881111,9222229,15551551,15555151,15555511,16166611,
%U A048518 16616161,33333373,33733333,34434343,44334343,44343433,51155551
%N A048518 Primes containing only two different digits whose sum of digits is 28, 
               the second perfect number.
%C A048518 Calculated by Robert T. McQuaid (robert.mcquaid(AT)headwaters.com).
%H A048518 C. Rivera, <a href="http://www.primepuzzles.net/puzzles/puzz_035.htm">
               Source</a> from Carlos Rivera's Puzzle Site.
%Y A048518 Cf. A000396, A048517.
%Y A048518 Sequence in context: A167292 A037029 A048517 this_sequence A043416 A125680 
               A162238
%Y A048518 Adjacent sequences: A048515 A048516 A048517 this_sequence A048519 A048520 
               A048521
%K A048518 nonn,base
%O A048518 0,1
%A A048518 Patrick De Geest (pdg(AT)worldofnumbers.com), May 15 1999.
%E A048518 More terms from Naohiro Nomoto (6284968128(AT)geocities.co.jp), Jul 28 
               2001

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