A069219 Number of cyclic primes with n digits.

4, 9, 12, 8, 10, 12, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1

Offset

1,1

Comments

Every prime repunit is also a cyclic prime.

Links

Table of n, a(n) for n=1..23.

P. De Geest, Circular Primes

Crossrefs

Cf. A004022, A004023, A068652.

Sequence in context: A085724 A106854 A099458 * A368742 A312848 A010413

Adjacent sequences: A069216 A069217 A069218 * A069220 A069221 A069222

Keyword

nonn,base

Author

Martin Renner, Apr 12 2002

Extensions

More terms from De Geest link by Ray Chandler, May 04 2017

Status

approved