A036951 Smallest n-digit prime containing only the digits 8 and 9, or 0 if no such prime exists.

0, 89, 0, 8999, 89899, 888989, 8888989, 88888999, 888898889, 8888888989, 88888888999, 888888898999, 8888888999899, 88888888888889, 888888888898999, 8888888888989999, 88888888888888889, 888888888888898889

Offset: 1

Author

Patrick De Geest, Jan 04 1999

Keywords

• nonn
• base

Links

• Jinyuan Wang, Table of n, a(n) for n = 1..500

Crossrefs

Cf. A020472, A036229, A036325.

Programs

Mathematica

Table[SelectFirst[10#+9&/@FromDigits/@Tuples[{8,9},n-1],PrimeQ],{n,20}]/. (Missing["NotFound"]->0) (* Harvey P. Dale, Feb 01 2018 *)