a(n) = smallest prime >= 10^n with primitive root 10.
7, 17, 109, 1019, 10007, 100019, 1000171, 10000019, 100000007, 1000000007
4 seqfan posts
Sun Feb 19 03:48:39 CET 2012 [seqfan] Re: Definition of primitive root (was Re: changes to A205989)
Sun Feb 19 02:45:59 CET 2012 [seqfan] Re: Definition of primitive root (was Re: changes to A205989)
Sun Feb 19 01:27:06 CET 2012 [seqfan] Re: Definition of primitive root (was Re: changes to A205989)
Sat Feb 18 23:39:11 CET 2012 [seqfan] Definition of primitive root (was Re: changes to A205989)
Index of A-numbers in seqfan: by ascending order
by month
by frequency
by keyword
Links to OEIS content are included according to
The OEIS End-User License Agreement
.