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 A101086 Numbers k for which 997*k + 1009 is prime. 7
 0, 6, 10, 12, 22, 36, 64, 76, 82, 94, 126, 130, 136, 144, 150, 162, 174, 186, 202, 204, 246, 250, 252, 274, 276, 292, 294, 300, 306, 312, 330, 342, 360, 364, 390, 430, 466, 472, 480, 484, 490, 502, 526, 540, 546, 582, 586, 592, 594, 606, 610, 616, 622, 642 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS 997 is the largest three-digit prime and 1009 is the smallest four-digit prime. Solutions of the equation (997*k+1009)'=1, where k' is the arithmetic derivative of k. - Paolo P. Lava, Nov 27 2012 LINKS EXAMPLE If k=6, then 997*6 + 1009 = 6991 (prime). If k=10, then 997*10 + 1009 = 10979 (prime). If k=12, then 997*12 + 1009 = 12973 (prime). MATHEMATICA Select[Range[0, 700], PrimeQ[997#+1009]&] (* Harvey P. Dale, Jun 29 2011 *) PROG (MAGMA) [ n: n in [0..700] | IsPrime(997*n + 1009) ]; // Vincenzo Librandi, Feb 04 2011 CROSSREFS Cf. A100776, A101084, A101123, A101444. Sequence in context: A315138 A315139 A046363 * A342648 A297620 A074924 Adjacent sequences:  A101083 A101084 A101085 * A101087 A101088 A101089 KEYWORD nonn AUTHOR Parthasarathy Nambi, Jan 21 2005 EXTENSIONS Extended by Ray Chandler, Jan 25 2005 STATUS approved

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Last modified January 20 03:25 EST 2022. Contains 350467 sequences. (Running on oeis4.)