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A103521 Primes which have fewer primitive roots than any larger prime. 2
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 (list; graph; refs; listen; history; text; internal format)
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

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Last modified September 28 19:16 EDT 2021. Contains 347717 sequences. (Running on oeis4.)