A240028 Numbers with primitive root 11.

2, 3, 4, 6, 9, 13, 17, 18, 23, 26, 27, 29, 31, 34, 41, 46, 47, 54, 58, 59, 62, 67, 71, 73, 81, 82, 94, 101, 103, 109, 118, 134, 142, 146, 149, 162, 163, 169, 173, 179, 197, 202, 206, 218, 223, 233, 243, 251, 277, 281, 289, 293, 298, 326, 331, 338, 346, 358

Offset: 1

Author

Vincenzo Librandi, Mar 31 2014

Keywords

• nonn
• easy

Links

• Vincenzo Librandi, Table of n, a(n) for n = 1..1000

Crossrefs

Cf. numbers with positive primitive root r: A167791 (r=2), A167792 (r=3), A167793 (r=5), A167794 (r=6), A167795 (r=7), A167796 (r=8), A167797 (r=10).

Cf. numbers with negative primitive root r: A167798 (r=-2), A167799 (r=-3), A167800 (r=-4), A167801 (r=-5), A167802 (r=-6), A167803 (r=-7), A167804 (r=-8), A167805 (r=-9), A167806 (r=-10).

Programs

Mathematica

pr = 11; Select[Range[2, 400], MultiplicativeOrder[pr, #] == EulerPhi[#] &]