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A229499
Palindromic prime numbers == 4 (mod 9).
1
373, 787, 12721, 14341, 18481, 30703, 31513, 32323, 34843, 37273, 38083, 73237, 74047, 77377, 93739, 97879, 98689, 1035301, 1043401, 1092901, 1117111, 1190911, 1215121, 1280821, 1338331, 1362631, 1411141, 1444441, 1452541, 1469641, 1542451, 1550551, 1583851
OFFSET
1,1
LINKS
MATHEMATICA
t = {}; Do[z = n*10^(IntegerLength[n] - 1) + FromDigits@Rest@Reverse@IntegerDigits[n]; If[PrimeQ[z] && Mod[z, 9] == 4, AppendTo[t, z]], {n, 1, 99999}]; t
CROSSREFS
Sequence in context: A142921 A263724 A133559 * A023313 A213301 A213300
KEYWORD
nonn,base,less
AUTHOR
Shyam Sunder Gupta, Oct 02 2013
STATUS
approved