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A142198 Primes congruent to 39 mod 40. 3
79, 199, 239, 359, 439, 479, 599, 719, 839, 919, 1039, 1279, 1319, 1399, 1439, 1559, 1759, 1879, 1999, 2039, 2239, 2399, 2719, 2879, 2999, 3079, 3119, 3319, 3359, 3559, 3719, 3919, 4079, 4159, 4519, 4639, 4679, 4759, 4799, 4919, 4999, 5039, 5119, 5279, 5399 (list; graph; refs; listen; history; text; internal format)
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 02 2016

MATHEMATICA

Select[Prime[Range[2000]], MemberQ[{39}, Mod[#, 40]]&] (* Vincenzo Librandi, Aug 22 2012 *)

PROG

(MAGMA) [p: p in PrimesUpTo(7000) | p mod 40 eq 39 ]; // Vincenzo Librandi, Aug 22 2012

(PARI) is(n)=isprime(n) && n%40==39 \\ Charles R Greathouse IV, Jul 02 2016

CROSSREFS

Cf. A000040.

Sequence in context: A142678 A191227 A142747 * A089686 A278837 A260335

Adjacent sequences:  A142195 A142196 A142197 * A142199 A142200 A142201

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane, Jul 11 2008

STATUS

approved

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Last modified July 9 18:08 EDT 2020. Contains 335545 sequences. (Running on oeis4.)