A067899 Fractal palindromic primes of second order.

3135313, 3732373, 3836383, 7276727, 7278727, 7576757, 7873787, 7977797, 11311511311, 11411311411, 131113161311131, 151315131513151, 919691979196919, 10301110301310301110301, 10501210501610501210501, 10601110601610601110601, 10601110601710601110601

Offset

1,1

Links

Sean A. Irvine, Table of n, a(n) for n = 1..1000

Example

11411311411 is a palindromic prime in the sequence because about the middle 3, either wing 11411 is itself a palindromic prime, further made up, about a middle 4, of wings 11, another palindromic prime.

Crossrefs

Cf. A082584, A082589.

Cf. A082599.

Sequence in context: A186551 A172606 A234151 * A234449 A204629 A235070

Adjacent sequences: A067896 A067897 A067898 * A067900 A067901 A067902

Keyword

base,nonn

Author

Lekraj Beedassy, May 13 2003

Extensions

Revised by Sean A. Irvine, Dec 14 2025

Status

approved