Smallest k such that the concatenation of the numbers 123...k in base n is prime when interpreted as a decimal number, or -1 if no such prime exists.
A362429
Smallest k such that the concatenation of the numbers 123...k in base n is prime when interpreted as a decimal number, or -1 if no such prime exists.
Terms
- a(0) =-1a(1) =231a(2) =7315a(3) =3241a(4) =6a(5) =12891a(6) =22a(7) =227a(8) =127
External references
- oeis: A362429