A191085 Primes p that have Kronecker symbol (p|91) = -1.

2, 3, 11, 17, 37, 61, 67, 71, 101, 103, 109, 131, 137, 139, 149, 151, 157, 163, 173, 181, 193, 197, 199, 239, 251, 257, 269, 281, 283, 311, 313, 317, 331, 359, 367, 379, 401, 419, 421, 431, 433, 439, 449, 457, 463, 467, 487, 499, 503, 521, 523, 541, 557, 563

Offset: 1

Author

T. D. Noe, May 25 2011

Keywords

• nonn
• easy

Comments

Originally erroneously named "Primes that are not squares mod 91". - M. F. Hasler, Jan 18 2016

Links

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

Crossrefs

Cf. A191054.

Programs

Magma

[p: p in PrimesUpTo(563) | JacobiSymbol(p, 91) eq -1]; // Vincenzo Librandi, Sep 11 2012

Mathematica

Select[Prime[Range[200]], JacobiSymbol[#,91]==-1&]

Extensions

Definition corrected, following a suggestion from David Broadhurst, by M. F. Hasler, Jan 18 2016