|
|
A139935
|
|
Primes of the form 2x^2+2xy+173y^2.
|
|
2
|
|
|
2, 173, 197, 233, 257, 317, 353, 593, 653, 857, 1013, 1097, 1277, 1373, 1553, 1613, 1637, 1697, 1733, 1913, 1973, 2237, 2393, 2417, 2477, 2657, 2693, 2753, 2837, 2957, 3137, 3413, 3617, 3797, 4073, 4133, 4217, 4337, 4373, 4397, 4457, 4493
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
COMMENTS
|
Discriminant=-1380. See A139827 for more information.
|
|
LINKS
|
|
|
FORMULA
|
The primes are congruent to {2, 77, 173, 197, 233, 257, 317, 353, 377, 473, 533, 593, 653, 737, 857, 1013, 1037, 1097, 1133, 1277, 1313, 1337, 1373} (mod 1380).
|
|
MATHEMATICA
|
QuadPrimes2[2, -2, 173, 10000] (* see A106856 *)
|
|
PROG
|
(Magma)[ p: p in PrimesUpTo(6000) | p mod 1380 in [2, 77, 173, 197, 233, 257, 317, 353, 377, 473, 533, 593, 653, 737, 857, 1013, 1037, 1097, 1133, 1277, 1313, 1337, 1373]]; // Vincenzo Librandi, Aug 02 2012
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn,easy
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|