login
This site is supported by donations to The OEIS Foundation.

 

Logo

Annual Appeal: Please make a donation to keep the OEIS running. In 2018 we replaced the server with a faster one, added 20000 new sequences, and reached 7000 citations (often saying "discovered thanks to the OEIS").
Other ways to donate

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A092168 Primes congruent to 3 (modulo 19). 1
3, 41, 79, 193, 269, 307, 383, 421, 839, 877, 953, 991, 1181, 1409, 1447, 1523, 1637, 1789, 1979, 2017, 2131, 2207, 2473, 2549, 2663, 2777, 3119, 3271, 3347, 3461, 3499, 3613, 3727, 3803, 3917, 4259, 4297, 4373, 4639, 4943, 5171, 5209, 5323, 5399, 5437 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Used in a primality test.

LINKS

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

Chris Caldwell, Prime test.

FORMULA

a(n) ~ 18n log n. - Charles R Greathouse IV, Jul 03 2016

MATHEMATICA

Select[ Prime[ Range[750]], Mod[ #, 19] == 3 &] (* Robert G. Wilson v, Apr 09 2004 *)

PROG

(MAGMA) [p: p in PrimesUpTo(6000) | p mod 19 eq 3]; // Vincenzo Librandi, Aug 06 2012

(PARI) is(n)=isprime(n) && n%19==3 \\ Charles R Greathouse IV, Jul 03 2016

CROSSREFS

Sequence in context: A105906 A157009 A100765 * A080347 A229080 A289270

Adjacent sequences:  A092165 A092166 A092167 * A092169 A092170 A092171

KEYWORD

nonn,easy

AUTHOR

Jun Mizuki (suzuki32(AT)sanken.osaka-u.ac.jp), Apr 01 2004

EXTENSIONS

More terms from Robert G. Wilson v, Apr 09 2004

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified December 17 09:23 EST 2018. Contains 318193 sequences. (Running on oeis4.)