A142043 Primes congruent to 21 mod 32.

53, 149, 181, 277, 373, 661, 757, 821, 853, 1013, 1109, 1237, 1301, 1429, 1493, 1621, 1877, 1973, 2069, 2293, 2357, 2389, 2549, 2677, 2741, 2837, 3061, 3221, 3253, 3413, 3541, 3637, 3701, 3733, 3797, 3989, 4021, 4373, 4597, 4789, 5077, 5237, 5333, 5557

Offset

1,1

Links

Vincenzo Librandi, Table of n, a(n) for n = 1..1000

Formula

a(n) ~ 16n log n. - Charles R Greathouse IV, Jul 03 2016

Mathematica

Select[Range[21, 20000, 32], PrimeQ] (* Vladimir Joseph Stephan Orlovsky, Jun 24 2011 *)
Select[Prime[Range[2000]], MemberQ[{21}, Mod[#, 32]]&] (* Vincenzo Librandi, Aug 18 2012 *)

Prog

(Magma) [p: p in PrimesUpTo(6000) | p mod 32 eq 21 ]; // Vincenzo Librandi, Aug 18 2012
(PARI) is(n)=isprime(n) && n%32==21 \\ Charles R Greathouse IV, Jul 03 2016

Crossrefs

Cf. A000040, A142045, A142046.

Sequence in context: A142259 A161611 A251076 * A175600 A142417 A217718

Adjacent sequences: A142040 A142041 A142042 * A142044 A142045 A142046

Keyword

nonn,easy

Author

N. J. A. Sloane, Jul 11 2008

Status

approved