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A156013 Primes p such that 2*p+3, 64*p+189 are both prime. 1

%I #9 Sep 08 2022 08:45:41

%S 2,5,13,17,53,73,97,127,173,193,223,227,283,337,487,503,557,643,647,

%T 743,797,827,887,997,1033,1187,1193,1237,1483,1553,1583,1613,1663,

%U 1693,2027,2143,2203,2273,2297,2437,2467,2617,2777,2833,2843,2857,3163,3167,3343

%N Primes p such that 2*p+3, 64*p+189 are both prime.

%H Vincenzo Librandi, <a href="/A156013/b156013.txt">Table of n, a(n) for n = 1..1000</a>

%t Select[Prime[Range[3500]], And @@ PrimeQ[{2# + 3, 64# + 189}]&] (* _Vincenzo Librandi_, Oct 31 2012 *)

%o (Magma) [p: p in PrimesUpTo(3600) | IsPrime(2*p + 3) and IsPrime(64*p + 189)]; // _Vincenzo Librandi_, Oct 31 2012

%Y Cf. A156009.

%K nonn,easy

%O 1,1

%A _Vincenzo Librandi_, Feb 01 2009

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Last modified June 22 07:39 EDT 2024. Contains 373565 sequences. (Running on oeis4.)