Search: id:A007506
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%I A007506 M1554
%S A007506 2,5,71,369119,415074643
%N A007506 Primes p with property that p divides the sum of all primes <= p.
%D A007506 J.-M. De Koninck, Ces nombres qui nous fascinent, Entry 71, p. 25, Ellipses, 
               Paris 2008.
%D A007506 Harry L. Nelson, Prime Sums, J. Rec. Math., 14 (1981), 205-206.
%D A007506 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, 
               Academic Press, 1995 (includes this sequence).
%H A007506 C. Rivera, <a href="http://www.primepuzzles.net/puzzles/puzz_018.htm">
               Puzzle</a>
%e A007506 For example 2 divides 2, 5 divides 2+3, 71 divides 2+3+5+7+. . .+61+67, 
               ...
%Y A007506 Cf. A024011, A028581, A028582.
%Y A007506 Sequence in context: A100009 A167218 A013045 this_sequence A042693 A128297 
               A102983
%Y A007506 Adjacent sequences: A007503 A007504 A007505 this_sequence A007507 A007508 
               A007509
%K A007506 nonn,nice,hard
%O A007506 1,1
%A A007506 N. J. A. Sloane (njas(AT)research.att.com), Robert G. Wilson v (rgwv(AT)rgwv.com)
%E A007506 No others < 29505444491 - Jud McCranie (j.mccranie(AT)comcast.net), Jul 
               08 2000
%E A007506 No other terms < 10^12 [From Jon E. Schoenfield (jonscho(AT)hiwaay.net), 
               Sep 11 2008]

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