|
|
A033220
|
|
Primes of form x^2+30*y^2.
|
|
2
|
|
|
31, 79, 151, 199, 241, 271, 409, 439, 601, 631, 751, 769, 919, 991, 1009, 1039, 1129, 1201, 1231, 1249, 1279, 1321, 1399, 1471, 1489, 1609, 1759, 1801, 1831, 1879, 1951, 1999, 2089, 2161, 2239, 2281
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
REFERENCES
|
David A. Cox, "Primes of the Form x^2 + n y^2", Wiley, 1989.
|
|
LINKS
|
|
|
FORMULA
|
Equivalently, primes congruent to {1, 31, 49, or 79} (mod 120) - T. D. Noe, Apr 29 2008. [See e.g. Cox, p. 36. - N. J. A. Sloane, May 27 2014]
|
|
MATHEMATICA
|
QuadPrimes2[1, 0, 30, 10000] (* see A106856 *)
|
|
PROG
|
(Magma) [ p: p in PrimesUpTo(3000) | p mod 120 in {1, 31, 49, 79} ]; // Vincenzo Librandi, Jul 20 2012
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn,easy
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|