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Primes p that have Kronecker symbol (p|70) = -1.
1

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

%S 3,11,13,23,29,31,41,83,89,109,113,127,137,149,157,173,179,193,199,

%T 211,227,233,241,263,271,283,293,307,311,331,337,379,389,397,409,421,

%U 439,457,463,467,479,487,491,499,521,523,541,563,571,587,601,617,643,659

%N Primes p that have Kronecker symbol (p|70) = -1.

%C Originally erroneously named "Primes that are not squares mod 70". - _M. F. Hasler_, Jan 18 2016

%H Vincenzo Librandi, <a href="/A191078/b191078.txt">Table of n, a(n) for n = 1..1000</a>

%t Select[Prime[Range[200]], JacobiSymbol[#,70]==-1&]

%o (Magma) [p: p in PrimesUpTo(659) | KroneckerSymbol(p, 70) eq -1]; // _Vincenzo Librandi_, Sep 11 2012

%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