login
Largest prime with 2^n digits.
2

%I #8 Dec 28 2023 15:30:03

%S 7,97,9973,99999989,9999999999999937,99999999999999999999999999999979,

%T 9999999999999999999999999999999999999999999999999999999999999949

%N Largest prime with 2^n digits.

%t NextPrime[10^2^Range[0,6],-1] (* _Harvey P. Dale_, Dec 28 2023 *)

%Y Cf. A157036, A003618, A157033, A157034.

%K nonn,base

%O 0,1

%A _Lekraj Beedassy_, Feb 22 2009