Smallest n-digit prime containing only the digits 5 and 7, or 0 if no such prime exists.
A036946
Smallest n-digit prime containing only the digits 5 and 7, or 0 if no such prime exists.
Terms
- a(0) =5a(1) =0a(2) =557a(3) =5557a(4) =57557a(5) =555557a(6) =5555777a(7) =55555777a(8) =555557557a(9) =5555555557a(10) =55555555777a(11) =555555575557
External references
- oeis: A036946