Search: id:A072686
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%I A072686
%S A072686 2,3,7,23,37,79,83,97,109,139,157,163,167,199,211,229,239,257,263,271,
%T A072686 313,401,421,431,449,491,503,521,569,643,647,653,709,719,751,761,809,
%U A072686 907,991,1021,1031,1049,1069,1091,1103,1301,1303,1307,1327,1409,1511
%N A072686 Prime numbers whose English names have a prime number of letters.
%e A072686 e.g. 2003 -> "TWOTHOUSANDANDTHREE" -> 19 letters and 19 is prime. Note 
               that the "and" naming convention is used; e.g. "ONE HUNDRED AND ONE", 
               "ONE THOUSAND NINE HUNDRED AND SEVENTY THREE".
%Y A072686 Prime elements of A072685.
%Y A072686 Sequence in context: A118883 A061712 A059661 this_sequence A002230 A106865 
               A000057
%Y A072686 Adjacent sequences: A072683 A072684 A072685 this_sequence A072687 A072688 
               A072689
%K A072686 easy,nonn,word
%O A072686 0,1
%A A072686 Mark Hudson (mrmarkhudson(AT)hotmail.com), Jul 02 2002

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