primes with primitive root 10

[Robert G. Wilson v]

Et al,

	The number of primes less than the 10^n_th prime which are in A001913 is 
5,38,387,3755,37523,374126,... which is not yet in the OEIS, and it would appear 
that A001913/A000040 => 1/e.

Bob.

Klaus Brockhaus wrote:
> Seqfans,
> 
> are there any results concerning the density of primes with primitive root 10 (A001913), or of Long period primes, (A006883) relative to the sequence of all primes (A000040)?
> 
> and the same question for primes with primitive root 2 (A001122)?
> 
> Thanks,
> Klaus
>