A103203 Primes which have more primitive roots than any smaller prime.

2, 5, 11, 17, 23, 29, 41, 47, 53, 59, 83, 107, 137, 149, 167, 173, 179, 227, 257, 263, 269, 293, 317, 347, 359, 383, 389, 467, 479, 503, 509, 557, 563, 587, 653, 719, 773, 797, 809, 839, 857, 863, 887, 929, 977, 983, 1019, 1049, 1097, 1109, 1187, 1229

Offset

1,1

Links

Jeppe Stig Nielsen, Table of n, a(n) for n = 1..100000

Prog

(PARI) my(record=0, r); forprime(p=2, 1500, r=eulerphi(p-1); if(r>record, record=r; print1(p, ", "))) \\ Jeppe Stig Nielsen, Oct 18 2019

Crossrefs

Cf. A103521, A121519, A008330.

Sequence in context: A156830 A140556 A003627 * A105875 A031368 A020613

Adjacent sequences: A103200 A103201 A103202 * A103204 A103205 A103206

Keyword

nonn

Author

Don Reble, Mar 19 2005

Status

approved