A269066 - OEIS

A269066

Five-digit primes whose first, third, and fifth digits are the same.

10111, 10141, 10151, 10181, 11131, 11161, 11171, 12101, 12161, 13121, 13151, 13171, 15101, 15121, 15131, 15161, 16111, 16141, 17191, 18121, 18131, 18181, 18191, 19121, 19141, 19181, 30313, 30323, 31333, 31393, 32303, 32323, 32353, 32363, 33343, 33353, 34303

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OFFSET

1,1

COMMENTS

There are 107 such primes.

LINKS

Harvey P. Dale, Table of n, a(n) for n = 1..107

EXAMPLE

13151 is a prime and its first, third, and fifth digits are the same.

MATHEMATICA

Select[Prime[Range[1230, 9592]], MatchQ[IntegerDigits[#], {x_, _, x_, _, x_}]&]

CROSSREFS