A108324 - OEIS

A108324

"Binary prime squares": squares whose binary expansions, read as decimal expansions, are primes.

%I #11 Oct 03 2018 09:14:38

%S 841,1521,2601,2809,4489,7225,7569,11449,18225,32761,35721,55225,

%T 64009,88209,123201,140625,143641,198025,201601,243049,339889,358801,

%U 375769,491401,511225,525625,546121,561001,591361,609961,690561,707281,717409,727609,848241

%N "Binary prime squares": squares whose binary expansions, read as decimal expansions, are primes.

%C Similar to A108323 but in base 10.

%e 1521 = 39^2 is a term because 1521 = 10111110001_2 and the decimal number 10111110001 is prime.

%t Select[Range[1000]^2, PrimeQ@ FromDigits@ IntegerDigits[#, 2] &] (* _Giovanni Resta_, Oct 03 2018 *)

%Y Cf. A108322, A108323, A108325.

%K easy,nonn,base

%O 1,1

%A _Alexandre Wajnberg_, Jun 30 2005

%E More terms from _Giovanni Resta_, Oct 03 2018