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A142043
Primes congruent to 21 mod 32.
1
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
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
KEYWORD
nonn,easy
AUTHOR
N. J. A. Sloane, Jul 11 2008
STATUS
approved