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

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

Cf. A269564

Sequence in context: A260247 A058042 A191244 * A161786 A157711 A159863

Adjacent sequences: A269063 A269064 A269065 * A269067 A269068 A269069

Keyword

nonn,base,fini

Author

Harvey P. Dale, Feb 21 2016

Status

approved