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%I #4 Apr 03 2023 10:36:10
%S 1,37,58,119,130,195,292,419,453,464,561,617,618,652,679,720,762,787,
%T 827,830,945,1034,1090,1139,1191,1200,1344,1383,1386,1451,1496,1519,
%U 1774,1783,1820,1822,1911,1966,1973,2018,2128,2219,2247,2378,2566,2644
%N Numbers n such that the concatenation of consecutive increasing numbers beginning with prime(n) and ending with prime(n+1) is prime; or n such that A111875(n) is prime.
%C Honaker's prime curiosity corresponds to a(2)=37. Concatenating all the increasing numbers from prime(1473480)=23428439 to prime(1473481)=23428523 produces a 680-digit prime (certified).
%H G. L. Honaker, Jr., <a href="https://t5k.org/curios/page.php/157158159160161162163.html">Prime Curios</a>
%e a(3)=58 because prime(58)=271 and prime(59)=277 and 271272273274275276277
%e is prime.
%K easy,nonn,base
%O 1,2
%A _Jason Earls_, Aug 18 2005
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