Search: id:A007523
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%I A007523 M2966
%S A007523 3,13,51413,951413,2951413,53562951413,979853562951413
%N A007523 Primes in A092845 (decimal expansion of pi written backwards).
%C A007523 Next term is probably A092845(711), a 712-digit probable prime (Baillie-Pomerance-Selfridge-Wagstaff 
               test, cf. PARI/gp documentation) beginning 2116599102453... and ending 
               ...62648323979853562951413.
%D A007523 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, 
               Academic Press, 1995 (includes this sequence).
%D A007523 M. Gardner, Whys and Wherefores, Univ. Chicago Press, 1989, p. 84.
%H A007523 <a href="Sindx_Ph.html#Pi314">Index entries for sequences related to 
               the number Pi</a>
%F A007523 Equals A000040 intersect A092845.
%e A007523 51413 is in the list because it is prime and its decimal reversal, 31415, 
               is the first 5 digits of Pi.
%Y A007523 Cf. A005042, A092845, A011545.
%Y A007523 Sequence in context: A087333 A016104 A112856 this_sequence A092830 A105291 
               A048756
%Y A007523 Adjacent sequences: A007520 A007521 A007522 this_sequence A007524 A007525 
               A007526
%K A007523 base,nonn
%O A007523 1,1
%A A007523 N. J. A. Sloane (njas(AT)research.att.com) and Robert G. Wilson v (rgwv(AT)rgwv.com)
%E A007523 Edited by M. F. Hasler (www.univ-ag.fr/~mhasler) and N. J. A. Sloane 
               (njas(AT)research.att.com), Mar 30 2008
%E A007523 Edited by T. D. Noe (noe(AT)sspectra.com), Oct 30 2008

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