Smallest n-digit prime containing only digits 2 and 7, or 0 if no such prime exists.
A036938
Smallest n-digit prime containing only digits 2 and 7, or 0 if no such prime exists.
Terms
- a(0) =2a(1) =0a(2) =227a(3) =2777a(4) =22277a(5) =272227a(6) =2227727a(7) =22227277a(8) =222222227a(9) =2222222777a(10) =22222222277a(11) =222222272777
External references
- oeis: A036938