a(n) is the least prime that is the concatenation of two n-digit primes, or 0 if there are none.
A340487
a(n) is the least prime that is the concatenation of two n-digit primes, or 0 if there are none.
Terms
- a(0) =23a(1) =1117a(2) =101107a(3) =10091021a(4) =1000710181a(5) =100003100129
External references
- oeis: A340487