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%I #9 Sep 08 2022 08:46:11
%S 239,1871,390959,839519,5622479,10256399,14639039,60453359,142374959,
%T 188226719,423474479,1119903119,7965713519,9788425919,16180741439,
%U 22110152399,28064855519,28793774879,36010838159,43494981839,44506450799
%N Primes of the form 3p^4-4 with p prime.
%C Corresponding values of p: 3,5,19,23,37,43,47,67,83,89,109,139,227,239,...
%C and indices of p's: 2,3,8,9,12,14,15,19,23,24,29,34,49,52,58,62,...
%t Select[Table[3p^4-4,{p,Prime[Range[100]]}],PrimeQ] (* _Harvey P. Dale_, Aug 26 2022 *)
%o (Magma) [3*p^4-4: p in PrimesUpTo(1000) | IsPrime(3*p^4-4)]; // _Vincenzo Librandi_, Mar 27 2015
%K nonn
%O 1,1
%A _Zak Seidov_, Mar 27 2015