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A230220 Smaller of two consecutive palindromic primes with equal digital sum. 1

%I #6 Oct 13 2013 13:59:49

%S 11,16661,31513,74747,75557,1035301,1074701,1303031,1363631,1374731,

%T 1557551,1646461,1714171,1777771,1909091,3075703,3127213,3452543,

%U 3627263,3635363,3646463,3746473,3784873,3948493,3983893,7057507,7302037,7354537,7365637,7622267

%N Smaller of two consecutive palindromic primes with equal digital sum.

%H Shyam Sunder Gupta, <a href="/A230220/b230220.txt">Table of n, a(n) for n = 1..5000</a>

%e 11 is in the sequence because 11 and 101 are consecutive palindromic primes and the sum of the digits of each = 2.

%Y Cf. A002385, A007953, A007605, A066540, A230199.

%K nonn,base

%O 1,1

%A _Shyam Sunder Gupta_, Oct 11 2013

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Last modified May 13 13:35 EDT 2024. Contains 372519 sequences. (Running on oeis4.)