Search: id:A039954
Results 1-1 of 1 results found.

%I A039954
%S A039954 3,313,31415926535897932384626433833462648323979853562951413
%N A039954 Palindromic primes formed from the reflected decimal expansion of Pi.
%C A039954 Thomas Spahni reports that the fifth member of this sequence with 921 
               digits is prime. He used Francois Morain's ECPP-V6.4.5a which proved 
               primality in 14913.7 seconds running on a Celeron Core2 CPU at 2.00GHz. 
               Jun 05 2008.
%H A039954 <a href="http://www.cecm.sfu.ca/pi/pi.html">Source</a>
%H A039954 Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/
               PalindromicPrime.html">Link to a section of The World of Mathematics.</
               a>
%H A039954 C. K. Caldwell, Prime Curios, <a href="http://primes.utm.edu/curios/page.php?curio_id=725">
               31414...51413 (53-digits)</a>
%Y A039954 Cf. A002385.
%Y A039954 Cf. A002385, A119351.
%Y A039954 Sequence in context: A083974 A135698 A088102 this_sequence A134215 A034994 
               A139541
%Y A039954 Adjacent sequences: A039951 A039952 A039953 this_sequence A039955 A039956 
               A039957
%K A039954 base,nonn,bref
%O A039954 1,1
%A A039954 G. L. Honaker, Jr. (honak3r(AT)gmail.com)
%E A039954 Carlos B. Rivera (crivera(AT)primepuzzles.net) reports that the next 
               two members of this sequence have 301 and 921 digits. The first has 
               been tested with APRTE-CLE. The second one is only a StrongPseudoPrime 
               at the moment.

Search completed in 0.001 seconds