A215535 - OEIS

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A215535

Numbers k such that 36^k - 35^k is prime.

%I #21 Nov 01 2018 21:32:00

%S 2,5,7,23,45737

%N Numbers k such that 36^k - 35^k is prime.

%C The number k has to be a prime.

%C a(6) > 10^5. - _Robert Price_, Oct 08 2012

%t Select[Prime[Range[PrimePi[1000]]], PrimeQ[36^# - 35^#] &] (* _T. D. Noe_, Aug 15 2012 *)

%o (PARI) is(n)=ispseudoprime(36^n-35^n) \\ _Charles R Greathouse IV_, Jun 13 2017

%K nonn,hard

%O 1,1

%A _Jean-Louis Charton_, Aug 15 2012

%E a(5) from _Robert Price_, Oct 08 2012