Least prime divisor of pi(10^n).

Terms

a(0) =2a(1) =5a(2) =2a(3) =1229a(4) =2a(5) =2a(6) =664579a(7) =3a(8) =2a(9) =97a(10) =19a(11) =2a(12) =11a(13) =2a(14) =19a(15) =5a(16) =3a(17) =2a(18) =23a(19) =2a(20) =2a(21) =2a(22) =73a(23) =2a(24) =2a(25) =7a(26) =3a(27) =2a(28) =3