A103521 Primes which have fewer primitive roots than any larger prime.

3, 7, 13, 19, 31, 43, 61, 67, 79, 103, 127, 151, 211, 241, 271, 331, 421, 463, 631, 661, 691, 751, 811, 1051, 1171, 1321, 1471, 1531, 1621, 1741, 2311, 2731, 2971, 3571, 3631, 4621, 4831, 4951, 5281, 6091, 6301, 6361, 7351, 8191, 9241, 9661, 9871

Offset

1,1

Links

Table of n, a(n) for n=1..47.

Crossrefs

Cf. A103203.

Sequence in context: A256864 A231432 A271981 * A103966 A023237 A106061

Adjacent sequences: A103518 A103519 A103520 * A103522 A103523 A103524

Keyword

nonn

Author

Don Reble, Mar 21 2005

Status

approved