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Start of nine consecutive primes whose digit reversals are also prime.
3

%I #6 Oct 15 2013 22:32:38

%S 1193,1201,7904639,91528739,91528777,120890249,154984343,174625597,

%T 302706311,302706319,312700789,318629783,707262887,756791029,

%U 777528457,777528461,778286917,778286947,923780981,924408493,924408497,958610069

%N Start of nine consecutive primes whose digit reversals are also prime.

%C There are large gaps in this sequence because all terms begin with 1, 3, 7, or 9.

%e 1193, 1201, 1213, 1217, 1223, 1229, 1231, 1237 and 1249 are consecutive primes.

%e Their digit reversals, 3911, 1021, 3121, 7121, 3221, 9221, 1321, 7321 and 9421, are all prime.

%Y Cf. A007500, A103169, A103170, A103172.

%K base,nonn

%O 1,1

%A _Labos Elemer_, Jan 31 2005

%E Edited by _David Wasserman_, Sep 05 2006