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A083020 Prime factors of 3^(3^n) + 2. 0

%I #14 Jul 06 2019 14:22:52

%S 5,29,5,31,127,11,693236134999,5,15679,2372959,5945531,3312453269,

%T 121032673159,

%U 87189642485960958202911070585860771696964072404731750085525219437990967093723439943475549906831683116791055225665629

%N Prime factors of 3^(3^n) + 2.

%C The last entry is 3^(3^5) + 2, a probable prime. Conjecture: These numbers have no repeating factors or 3^(3^n) + 2 is squarefree.

%C The Magma Calculator (http://magma.maths.usyd.edu.au/calc/) confirms that the term given above for a(13) is, in fact, prime. - _Jon E. Schoenfield_, Aug 24 2009

%K easy,nonn

%O 0,1

%A _Cino Hilliard_, May 31 2003

%E Corrected by _T. D. Noe_, Nov 15 2006

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Last modified April 17 21:01 EDT 2024. Contains 371767 sequences. (Running on oeis4.)