|
|
A140028
|
|
Primes of the form 42x^2+42xy+43y^2.
|
|
2
|
|
|
43, 127, 547, 823, 883, 907, 1303, 1327, 1663, 2083, 3067, 3823, 3847, 3943, 4027, 4447, 4603, 4663, 4783, 5443, 5503, 6007, 6343, 6367, 6763, 6967, 7687, 7723, 8467, 8527, 8563, 8863, 9283, 9403, 9643, 9907, 10243, 10663, 10903, 11047
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
COMMENTS
|
Discriminant=-5460. See A139827 for more information.
|
|
LINKS
|
|
|
FORMULA
|
The primes are congruent to {43, 127, 547, 667, 823, 883, 907, 1303, 1327, 1387, 1507, 1663, 1843, 1927, 2083, 2167, 2227, 2263, 3007, 3067, 3103, 3403, 3487, 3823, 3847, 3943, 4027, 4183, 4267, 4447, 4603, 4663, 4783, 5203, 5287, 5443} (mod 5460).
|
|
MATHEMATICA
|
QuadPrimes2[42, -42, 43, 10000] (* see A106856 *)
|
|
PROG
|
(Magma) [ p: p in PrimesUpTo(13000) | p mod 5460 in {43, 127, 547, 667, 823, 883, 907, 1303, 1327, 1387, 1507, 1663, 1843, 1927, 2083, 2167, 2227, 2263, 3007, 3067, 3103, 3403, 3487, 3823, 3847, 3943, 4027, 4183, 4267, 4447, 4603, 4663, 4783, 5203, 5287, 5443} ]; // Vincenzo Librandi, Aug 06 2012
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn,easy
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|