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A155924 Palindromic primes of form n^2+n+41. 1

%I #8 Mar 30 2012 17:35:01

%S 131,151,313,383,797,3288823,7493947,312989213,79091719097,

%T 1884468644881,191259232952191,13388297179288331,3101199511159911013,

%U 327274601898106472723,1208438177787877718348021,301692965738393837569296103

%N Palindromic primes of form n^2+n+41.

%C Corresponding n's are: 9,10,16,18,27,1813,2737,17691,281232,1372759.

%C a(17) > 10^28. - Donovan Johnson, Oct 11 2011

%Y Cf. A002385 Palindromic primes: prime numbers whose decimal expansion is a palindrome, A005846 Primes of form n^2+n+41.

%K base,more,nonn

%O 1,1

%A _Zak Seidov_, Jan 30 2009

%E a(11)-a(12) from _Donovan Johnson_, Feb 01 2009

%E a(13)-a(14) from _Donovan Johnson_, Jun 23 2010

%E a(15)-a(16) from _Donovan Johnson_, Oct 11 2011

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Last modified April 25 06:14 EDT 2024. Contains 371964 sequences. (Running on oeis4.)