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A142206
Primes congruent to 9 mod 41.
2
173, 337, 419, 829, 911, 1321, 1567, 2141, 2551, 2633, 2797, 2879, 3371, 3617, 3863, 4027, 4273, 4519, 5011, 5503, 5749, 6323, 6569, 6733, 7307, 7717, 7963, 8209, 8291, 8537, 8783, 9029, 9439, 9521, 9767, 9931, 10177, 10259, 11161, 11243, 11489, 11981
OFFSET
1,1
LINKS
FORMULA
a(n) ~ 40n log n. - Charles R Greathouse IV, Jul 02 2016
MATHEMATICA
Select[Prime[Range[1500]], Mod[#, 41]==9&] (* Harvey P. Dale, Apr 22 2011 *)
Select[Prime[Range[5000]], MemberQ[{9}, Mod[#, 41]]&] (* Vincenzo Librandi, Aug 23 2012 *)
Select[Range[9, 12000, 41], PrimeQ] (* Harvey P. Dale, Mar 12 2014 *)
PROG
(Magma) [p: p in PrimesUpTo(15000) | p mod 41 eq 9 ]; // Vincenzo Librandi, Aug 23 2012
(PARI) is(n)=isprime(n) && n%41==9 \\ Charles R Greathouse IV, Jul 02 2016
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
N. J. A. Sloane, Jul 11 2008
STATUS
approved