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%I #13 Sep 08 2022 08:45:48
%S 3,83,292299923,684331371443,191640836307771341507,
%T 9388970456309004899603,
%U 30363584636685952989516426809065192841572196335875312999038527044324069339846978313376123672504677550327603
%N Primes of the form a(n) = 3^n + 5^n + 7^n.
%C The next term has 435 digits. - _Harvey P. Dale_, Apr 06 2015
%t Select[Table[3^n+5^n+7^n,{n,0,200}],PrimeQ] (* _Harvey P. Dale_, Apr 06 2015 *)
%o (Magma) [ a: n in [0..450]|IsPrime(a) where a is 3^n+5^n+7^n] // _Vincenzo Librandi_, Dec 08 2010
%Y Cf. A160773 (corresponding values of n).
%K nonn
%O 1,1
%A _Zak Seidov_, Oct 09 2009
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