[go: up one dir, main page]

login
A142196
Primes congruent to 33 mod 40.
1
73, 113, 193, 233, 313, 353, 433, 593, 673, 953, 1033, 1153, 1193, 1433, 1553, 1753, 1873, 1913, 1993, 2113, 2153, 2273, 2393, 2473, 2593, 2633, 2713, 2753, 2833, 2953, 3313, 3433, 3593, 3673, 3793, 3833, 4073, 4153, 4273, 4513, 4673, 4793, 4993, 5113, 5153
OFFSET
1,1
LINKS
FORMULA
a(n) ~ 16n log n. - Charles R Greathouse IV, Jul 03 2016
MATHEMATICA
Select[Prime[Range[2000]], MemberQ[{33}, Mod[#, 40]]&] (* Vincenzo Librandi, Aug 22 2012 *)
Select[Range[33, 5200, 40], PrimeQ] (* Harvey P. Dale, Dec 16 2012 *)
PROG
(Magma) [p: p in PrimesUpTo(7000) | p mod 40 eq 33 ]; // Vincenzo Librandi, Aug 22 2012
(PARI) is(n)=isprime(n) && n%40==33 \\ Charles R Greathouse IV, Jul 03 2016
CROSSREFS
Cf. A000040.
Sequence in context: A118220 A144050 A087878 * A215963 A141991 A140742
KEYWORD
nonn,easy
AUTHOR
N. J. A. Sloane, Jul 11 2008
STATUS
approved