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 A108326 Integers n such that 10^n-17 is prime. 0
 2, 3, 6, 30, 40, 86, 128, 264, 639, 912, 1932, 4650, 5038, 7410, 19041 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Terms 639 and 912 correspond to certified primes (Primo 2.2.0 beta). - Ryan Propper, Jul 12 2005 No other terms < 40000. See Kamada link - primecount.txt for terms, primesize.txt for discovery details including probable or proved primes - search on "99983". No other terms < 100,000. - Robert Price, Mar 03 2011 LINKS Makoto Kamada, List of near-repdigit-related prime numbers. EXAMPLE If n = 3 we have 10^3-17 = 1000-17 = 983, which is prime. CROSSREFS Cf. A089675, A095714, A092767. Sequence in context: A051717 A330030 A192441 * A002234 A074005 A145499 Adjacent sequences: A108323 A108324 A108325 * A108327 A108328 A108329 KEYWORD more,nonn AUTHOR Julien Peter Benney (jpbenney(AT)ftml.net), Jun 30 2005 EXTENSIONS a(14)-a(15) from Robert Price, Dec 11 2010 Edited by Ray Chandler, Dec 23 2010 STATUS approved

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Last modified February 2 13:48 EST 2023. Contains 360021 sequences. (Running on oeis4.)