**Primes with an even number of digits such that the first half of the digits and the second half of the digits are both primes.**

*23, 37, 53, 73, 1103, 1117, 1123, 1129, 1153, 1171, 1303, 1307, 1319, 1361, 1367*

*7 seqfan posts*

Index of A-numbers in seqfan: by ascending order by month by frequency by keyword

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