%I #7 Dec 05 2013 19:55:15
%S 41,401,4001,40009,400009,4000037,40000003,400000009,4000000007,
%T 40000000003,400000000019,4000000000039,40000000000001,
%U 400000000000063,4000000000000021,40000000000000063,400000000000000013
%N Smallest prime in which the n-th significant digit is a 4.
%p seq(nextprime(4*10^j),j=1..32);
%t NextPrime[4*10^Range[20]] (* _Harvey P. Dale_, Apr 11 2013 *)
%Y Cf. A069588, A069589, A069590, A069591, A069592, A069593.
%K base,nonn
%O 2,1
%A _Amarnath Murthy_, Mar 25 2002
%E More terms from _Sascha Kurz_, Mar 28 2002