A029973 Primes that are palindromic in base 5.

2, 3, 31, 41, 67, 83, 109, 701, 911, 1091, 1171, 1277, 1327, 1667, 1847, 2083, 2213, 2293, 2423, 2473, 2579, 2659, 2789, 2969, 3049, 16001, 16651, 19531, 20431, 21481, 23311, 23561, 24611, 25391, 26041, 27091, 28921, 30871, 31121

Offset

1,1

Links

John Cerkan, Table of n, a(n) for n = 1..10000

P. De Geest, World!Of Palindromic Primes

Mathematica

f[n_]:=FromDigits[RealDigits[n, 5][[1]]]==FromDigits[Reverse[RealDigits[n, 5][[1]]]]; lst={}; Do[p=Prime[n]; If[f[p], AppendTo[lst, p]], {n, 8!}]; lst (* Vladimir Joseph Stephan Orlovsky, Aug 10 2009 *)

Crossrefs

Sequence in context: A155056 A110456 A128348 * A344736 A347332 A378868

Adjacent sequences: A029970 A029971 A029972 * A029974 A029975 A029976

Keyword

nonn,base

Author

Patrick De Geest

Status

approved