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 A105680 Numbers k such that 1009*k + 9973 is prime. 4
 0, 4, 10, 34, 40, 70, 106, 124, 136, 144, 150, 162, 166, 174, 186, 190, 202, 244, 280, 300, 312, 360, 370, 372, 376, 384, 390, 412, 454, 456, 466, 472, 474, 504, 522, 540, 544, 546, 550, 574, 586, 592, 606, 612, 624, 636, 654, 670, 682, 684, 690, 694, 696 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS 1009 and 9973 are the smallest and largest four-digit primes, respectively. LINKS Daniel Starodubtsev, Table of n, a(n) for n = 1..10000 EXAMPLE If k=0, then 1009*k + 9973 = 9973 (prime). If k=144, then 1009*k + 9973 = 155269 (prime). PROG (Magma) [n: n in [0..700] | IsPrime(1009*n+9973)]; // Vincenzo Librandi, Nov 13 2010 (PARI) is(n)=isprime(1009*n+9973) \\ Charles R Greathouse IV, Jun 06 2017 CROSSREFS Cf. A105679. Sequence in context: A149171 A149172 A338296 * A261577 A224217 A066454 Adjacent sequences: A105677 A105678 A105679 * A105681 A105682 A105683 KEYWORD nonn,easy AUTHOR Parthasarathy Nambi, May 06 2005 STATUS approved

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Last modified August 5 02:37 EDT 2024. Contains 374935 sequences. (Running on oeis4.)