A033248 Primes of the form x^2+74*y^2.

83, 521, 691, 787, 1163, 1193, 1291, 1409, 1627, 1913, 1931, 2099, 2273, 2347, 2579, 2689, 2713, 2833, 2897, 2939, 2953, 3067, 3209, 3323, 3371, 3691, 3851, 3889, 4451, 4513, 4817, 5099, 5147, 5153

Offset: 1

Author

N. J. A. Sloane

Keywords

• nonn
• easy

References

• David A. Cox, "Primes of the Form x^2 + n y^2", Wiley, 1989.

Links

• Vincenzo Librandi and Ray Chandler, Table of n, a(n) for n = 1..10000 [First 1000 terms from Vincenzo Librandi]
• N. J. A. Sloane et al., Binary Quadratic Forms and OEIS (Index to related sequences, programs, references)

Programs

Mathematica

QuadPrimes2[1, 0, 74, 10000] (* see A106856 *)