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 A133858 Primes of the form 11^n - 2. 3
 14639, 1771559 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS The only currently known primes of the form 11^n - 2 correspond to numbers n = {4, 6}. Last digit of a(n) is 9. 11^n-2 is also prime (probable prime) for n in {22420, 27636, 27850, 28986, 31168}. - Robert Price, Mar 26 2014 LINKS EXAMPLE a(1) = 11^4 - 2 = 14639, a(2) = 11^6 - 2 = 1771559. CROSSREFS Cf. A104096 = Largest prime <= 11^n. Cf. A130652 = 11^n - 2. Cf. A128472 = smallest prime of the form (2n-1)^k - 2 for k>(2n-1). Cf. A084714 = smallest prime of the form (2n-1)^k - 2. Cf. A014224, A109080, A090669, A128455, A128457, A128458, A128459, A128460, A128461. Cf. A133982. Sequence in context: A032736 A032738 A252218 * A023683 A231118 A017284 Adjacent sequences:  A133855 A133856 A133857 * A133859 A133860 A133861 KEYWORD bref,hard,more,nonn AUTHOR Alexander Adamchuk, Sep 27 2007 STATUS approved

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Last modified January 20 05:35 EST 2020. Contains 331067 sequences. (Running on oeis4.)