A229880 Palindromic prime numbers == 7 (mod 9).

7, 151, 313, 727, 10501, 11311, 13831, 15451, 17971, 30103, 35053, 37573, 70207, 71917, 72727, 78487, 90709, 93139, 94849, 96469, 1062601, 1160611, 1177711, 1193911, 1201021, 1218121, 1242421, 1250521, 1422241, 1447441, 1463641, 1496941, 1520251, 1594951

Offset

1,1

Links

Shyam Sunder Gupta, Table of n, a(n) for n = 1..1007

Mathematica

t = {}; Do[z = n*10^(IntegerLength[n] - 1) + FromDigits@Rest@Reverse@IntegerDigits[n]; If[PrimeQ[z] && Mod[z, 9] == 7, AppendTo[t, z]], {n, 1, 99999}]; t
Select[Prime[Range[130000]], PalindromeQ[#]&&Mod[#, 9]==7&] (* Harvey P. Dale, Jan 18 2026 *)

Crossrefs

Cf. A002385, A229875.

Sequence in context: A308581 A305467 A229806 * A070248 A329010 A309855

Adjacent sequences: A229877 A229878 A229879 * A229881 A229882 A229883

Keyword

nonn,base,less

Author

Shyam Sunder Gupta, Oct 02 2013

Status

approved