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Smallest n-digit term in A104179.
3

%I #8 Sep 23 2024 13:46:33

%S 2,23,223,2237,23333,223337,2233373,22323337,222335353,2232333533,

%T 22323332323,222335353337,2223337223773,22233372237737,

%U 222322375373773,2223223753737733,22232232373337353,222237322353237223,2222327532332333737,22223353533353323333

%N Smallest n-digit term in A104179.

%e a(3) = 223 because 223 is the smallest 3-digit prime that is a concatenation of a 1-digit prime and a 2-digit prime that is itself a concatenation of 1-digit primes.

%Y Subsequence of A104179.

%Y Cf. A376433, A376435.

%K nonn,base

%O 1,1

%A _Karl W. Heuer_, Sep 22 2024