Smallest prime which is the concatenation of 2 or more consecutive numbers starting with n, or -1 if no such prime exists.
A140793
Smallest prime which is the concatenation of 2 or more consecutive numbers starting with n, or -1 if no such prime exists.
Terms
- a(0) =23a(2) =4567a(4) =67a(5) =78910111213a(6) =89
External references
- oeis: A140793