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

%I #12 Sep 08 2022 08:45:57

%S 2,3,11,17,37,61,67,71,101,103,109,131,137,139,149,151,157,163,173,

%T 181,193,197,199,239,251,257,269,281,283,311,313,317,331,359,367,379,

%U 401,419,421,431,433,439,449,457,463,467,487,499,503,521,523,541,557,563

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

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

%H Vincenzo Librandi, <a href="/A191085/b191085.txt">Table of n, a(n) for n = 1..1000</a>

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

%o (Magma) [p: p in PrimesUpTo(563) | JacobiSymbol(p, 91) eq -1]; // _Vincenzo Librandi_, Sep 11 2012

%Y Cf. A191054.

%K nonn,easy

%O 1,1

%A _T. D. Noe_, May 25 2011

%E Definition corrected, following a suggestion from _David Broadhurst_, by _M. F. Hasler_, Jan 18 2016