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A251259 Numbers n such that 11*12^n + 1 is prime. 2

%I #20 Sep 08 2022 08:46:10

%S 3,4,35,119,476,507,6471,13319,31799

%N Numbers n such that 11*12^n + 1 is prime.

%C a(10) > 2*10^5. - _Robert Price_, Mar 20 2015

%e 11*12^4 + 1 = 228097, which is prime.

%t Select[Range[0, 1000], PrimeQ[11*12^# + 1] &]

%o (Magma) [n: n in [1..600]| IsPrime(11*12^n+1)]; // _Vincenzo Librandi_, Mar 21 2015

%o (PARI) is(n)=ispseudoprime(11*12^n+1) \\ _Charles R Greathouse IV_, Jun 13 2017

%Y Cf. A079907.

%K nonn,more

%O 1,1

%A _Robert Price_, Mar 20 2015

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Last modified April 19 11:31 EDT 2024. Contains 371792 sequences. (Running on oeis4.)