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A049485 Both p and p+510510 are primes, where 510510 is the 7th primorial number A002110(7). 4

%I #20 Sep 01 2019 09:17:35

%S 19,41,43,59,71,73,79,101,103,107,109,167,173,181,197,199,241,257,263,

%T 283,293,307,313,317,337,379,397,409,421,431,433,479,491,503,509,523,

%U 547,577,599,601,613,641,643,653,659,661,683,691,701,727,733,751,769

%N Both p and p+510510 are primes, where 510510 is the 7th primorial number A002110(7).

%C p and p+510510 are not necessarily consecutive primes.

%H Daniel Starodubtsev, <a href="/A049485/b049485.txt">Table of n, a(n) for n = 1..10000</a>

%e Both 19 and 19 + 2*3*5*7*11*13*17 = 510529 are prime.

%t lst={};Do[p=Prime[n];If[PrimeQ[p+510510],AppendTo[lst,p]],{n,6!}];lst (* _Vladimir Joseph Stephan Orlovsky_, Jan 04 2009 *)

%Y Cf. A045320, A001359, A023201, A002110, A049481, A049482, A049483, A049484, A049485, A154114.

%K nonn

%O 1,1

%A _Labos Elemer_

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Last modified April 16 14:05 EDT 2024. Contains 371740 sequences. (Running on oeis4.)