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A108342 Numbers n such that 1009*n - 997 is prime. 1
2, 20, 26, 36, 42, 44, 62, 102, 116, 140, 144, 146, 174, 180, 182, 194, 216, 282, 284, 300, 314, 330, 336, 372, 386, 440, 450, 462, 476, 480, 494, 506, 510, 512, 516, 572, 576, 590, 596, 606, 636, 642, 650, 680, 702, 722, 732, 746, 756, 770, 776, 782, 792 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

997 and 1009 are primes.

LINKS

Harvey P. Dale, Table of n, a(n) for n = 1..10000

EXAMPLE

If n=2 then 1009*n - 997 = 1021 (prime).

If n=140 then 1009*n - 997 = 140263 (prime).

MATHEMATICA

Select[Range[1000], PrimeQ[1009#-997]&] (* Harvey P. Dale, Jul 29 2014 *)

PROG

(MAGMA) [n: n in [1..100000] | IsPrime(1009*n - 997)] - Vincenzo Librandi, Nov 13 2010

(PARI) is(n)=isprime(1009*n-997) \\ Charles R Greathouse IV, Jun 12 2017

CROSSREFS

Sequence in context: A145681 A108061 A154546 * A136903 A078460 A059208

Adjacent sequences:  A108339 A108340 A108341 * A108343 A108344 A108345

KEYWORD

nonn,easy

AUTHOR

Parthasarathy Nambi, Jun 30 2005

STATUS

approved

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Last modified August 25 10:20 EDT 2019. Contains 326324 sequences. (Running on oeis4.)