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 A269066 Five-digit primes whose first, third, and fifth digits are the same. 2
 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 (list; graph; refs; listen; history; text; internal format)
 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

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Last modified August 15 17:35 EDT 2024. Contains 375173 sequences. (Running on oeis4.)