S000403


The n-th palindromic prime in base n, but written here in base 10.

2, 5, 23, 17, 67, 43, 257, 113, 227, 191, 587, 277, 653, 647, 647, 947, 2081, 1697, 1619, 1283, 2083, 1873, 2719, 4159, 2729, 2551, 3947, 3083, 4703, 6577, 5927, 5669, 5813, 6737, 8231, 7673, 9293, 10267, 8819, 11527, 12799, 10169, 14369, 10301, 10039, 11597

1

S000403

Note that all integers are palindromic in base 1. This is like A233756.

T. D. Noe, Plot of 1000 terms

T. D. Noe, Table of 1000 terms

Eric W. Weisstein, MathWorld: Palindromic Prime

(Mma) Join[{2}, Table[p = 1; fnd = 0; While[fnd < n, p = NextPrime[p]; If[IntegerDigits[p, n] == Reverse[IntegerDigits[p, n]], fnd++]]; p, {n, 2, 100}]]

Cf. A230820 (lists many other related sequences), S000394-S000402.

nonn,base

T. D. Noe, Dec 09 2014

© Tony D Noe 2014-2015