A068160 Smallest prime beginning and ending in exactly n 1's and containing at least one digit != 1.

101, 11311, 1114111, 111181111, 111110611111, 1111118111111, 111111151111111, 111111110911111111, 11111111128111111111, 111111111161111111111, 111111111110911111111111, 11111111111104111111111111, 1111111111111031111111111111, 11111111111111611111111111111, 11111111111111173111111111111111

Offset

1,1

Links

Table of n, a(n) for n=1..15.

Example

a(2) = 11311 is a prime that starts with 11 and ends in 11 (two 1's).

Crossrefs

Cf. A366416.

Sequence in context: A300570 A171825 A267937 * A185893 A156669 A082435

Adjacent sequences: A068157 A068158 A068159 * A068161 A068162 A068163

Keyword

nonn,base

Author

Amarnath Murthy, Feb 24 2002

Extensions

Corrected and extended by Sascha Kurz, Jan 03 2003

More precise name and more terms from Hugo Pfoertner, Oct 11 2023

Status

approved