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A253937 Primes p such that 4+p^7, 4+p^9 and 4+p^11 are also prime.

%I A253937 #6 Apr 01 2015 02:50:43
%S A253937 82609,1032607,1859479,2158447,4952173,5009593,5828353,6779833,
%T A253937 11316859,11370727,12786157,13872853,14117053,15082783,15645697,
%U A253937 15935989,16715623,20102569,21310603,22106569,22164253,23674597,26012953,26325613,29592919,30086347,30306637
%N A253937 Primes p such that 4+p^7, 4+p^9 and 4+p^11 are also prime.
%H A253937 K. D. Bajpai, <a href="/A253937/b253937.txt">Table of n, a(n) for n = 1..720</a>
%e A253937 a(1) = 82609:
%e A253937 4 + 82609^7 = 26253762656881427836948640304009173;
%e A253937 4 + 82609^9 = 179162157925737357103123335151825463343651893;
%e A253937 4 + 82609^11 = 1222646797417942588836172615268162579679296234658008213;
%e A253937 all four are prime.
%t A253937 Select[Prime[Range[1, 2000000]], PrimeQ[4 + #^7] && PrimeQ[4 + #^9] && PrimeQ[4 + #^11] &]
%o A253937 (PARI) forprime(p=1, 1e7, if(isprime(4+p^7) && isprime(4+p^9) && isprime(4+p^11), print1(p,", ")))
%Y A253937 Cf. A000040, A125260, A246519, A246562.
%K A253937 nonn
%O A253937 1,1
%A A253937 _K. D. Bajpai_, Jan 19 2015