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A102738 Numbers n such that 4*10^n - 11 is prime. 0

%I

%S 1,2,3,4,5,15,35,61,256,357,628,767,1064,1096,6608

%N Numbers n such that 4*10^n - 11 is prime.

%C Numbers corresponding to terms <= 767 are certified primes. - _Klaus Brockhaus_, Feb 16 2005

%C The next term is larger than 2500. - _Stefan Steinerberger_, Feb 18 2006

%t For[n=1, n<2500,n++,If[PrimeQ[4*10^n-11], Print[n]]] (* _Stefan Steinerberger_, Feb 18 2006 *)

%o (PARI) is(n)=ispseudoprime(4*10^n-11) \\ _Charles R Greathouse IV_, Jun 13 2017

%K more,nonn

%O 1,2

%A Tom Mueller (muel4503(AT)uni-trier.de), Feb 08 2005

%E a(9) to a(14) from _Klaus Brockhaus_, Feb 16 2005

%E One more term from _Ryan Propper_, Jul 21 2006

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Last modified June 18 01:16 EDT 2021. Contains 345098 sequences. (Running on oeis4.)