A036950 Smallest n-digit prime containing only the digits 7 and 9, or 0 if no such prime exists.

7, 79, 797, 0, 77797, 777977, 7777997, 77779799, 777777799, 7777779799, 77777779979, 777777779777, 7777777779977, 77777777777977, 777777777779797, 7777777777797799, 77777777777777797, 777777777777797977

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. A020471, A036229, A036324.