A019357 Primes with primitive root 31.

2, 7, 17, 29, 47, 53, 59, 61, 67, 71, 73, 89, 107, 131, 137, 197, 227, 229, 241, 269, 277, 283, 307, 311, 313, 337, 353, 359, 379, 389, 401, 419, 431, 433, 439, 443, 449, 457, 461, 467, 479, 503, 509, 557, 563, 569, 599, 607, 673, 677, 683, 709, 727, 751, 757, 761, 773

Offset: 1

Author

David W. Wilson

Keywords

• nonn
• easy

Links

• Vincenzo Librandi, Table of n, a(n) for n = 1..1000
• Index entries for primes by primitive root

Programs

Mathematica

Select[Prime[Range[200]], MultiplicativeOrder[31, # ] == # - 1 &]