Smallest number whose decimal expansion is a concatenation of two primes in n different ways.
A213072
Smallest number whose decimal expansion is a concatenation of two primes in n different ways.
Terms
- a(0) =22a(1) =237a(2) =2337a(3) =29397a(4) =739397a(5) =23932917a(6) =1997771997a(7) =79279391397
External references
- oeis: A213072