Search: id:A092767
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%I A092767
%S A092767 2,5,8,12,15,18,20,30,80,143,152,164,176,239,291,324,504,594,983,2894
%N A092767 Numbers n such that 10^n-11 is prime.
%C A092767 Some of the larger entries may only correspond to probable primes.
%C A092767 324, 504, 594 & 983 are certified prime by Primo. - Robert G. Wilson 
               v (rgwv(AT)rgwv.com), Jul 01 2005
%C A092767 Next term after 2894 is greater than 7250. - Stefan Steinerberger (stefan.steinerberger(AT)gmail.com), 
               May 05 2007
%e A092767 n = 5 is a member because 10^5-11 = 100000-11 = 99989, which is prime.
%t A092767 Do[ If[ PrimeQ[10^n - 11], Print[n]], {n, 3000}] (from Robert G. Wilson 
               v (rgwv(AT)rgwv.com), Jul 01 2005)
%o A092767 (PARI) for(n=0,5000,if(isprime(10^n-11),print1(n,","))) (Propper)
%Y A092767 Cf. A089675, A086865, A004023, A095714/.
%Y A092767 Sequence in context: A004112 A024815 A073837 this_sequence A108311 A080753 
               A156745
%Y A092767 Adjacent sequences: A092764 A092765 A092766 this_sequence A092768 A092769 
               A092770
%K A092767 more,nonn
%O A092767 1,1
%A A092767 Carl R. White (cyrek(AT)cyreksoft.yorks.com), Apr 23 2004
%E A092767 4 more terms from Ryan Propper (rpropper(AT)stanford.edu), Jun 15 2005
%E A092767 Edited by N. J. A. Sloane (njas(AT)research.att.com), May 04 2007

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