a(n) = smallest prime >= 10^n with primitive root 10.

A205989

a(n) = smallest prime >= 10^n with primitive root 10.

Terms

    a(0) =7a(1) =17a(2) =109a(3) =1019a(4) =10007a(5) =100019a(6) =1000171a(7) =10000019a(8) =100000007a(9) =1000000007a(10) =10000000019a(11) =100000000019

External references