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Differences in indices of palindromic five-digit primes.
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%I #8 Apr 19 2013 08:58:28

%S 22,8,74,10,106,36,9,55,52,12,35,44,79,9,53,30,20,11,81,51,23,34,79,

%T 54,10,995,12,18,27,8,21,50,76,13,110,101,28,17,13,17,33,49,29,70,33,

%U 43,7,57,49,2823,28,8,64,60,30,44,29,13,36,34,66,73,69,27,63,7,50,41,26,10,44,28,27,944,24,193,7,43,27,26,28,19,6,96,25,17,25,49,20,24,39,26

%N Differences in indices of palindromic five-digit primes.

%e First and second 5d palindromic primes are 10301=p(1263),10501=p(1285), hence a(1)=1285-1263=23. Two largest 5d palindromic primes are 98389=p(9448),98689=p(9474), hence a(92)=9474-9448=26. There are exactly 93 five-digit palindromic primes.

%Y Cf. A002385 = palindromic primes.

%K fini,full,base,nonn

%O 1,1

%A _Zak Seidov_, Jan 20 2006