A108324 - OEIS

A108324

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

841, 1521, 2601, 2809, 4489, 7225, 7569, 11449, 18225, 32761, 35721, 55225, 64009, 88209, 123201, 140625, 143641, 198025, 201601, 243049, 339889, 358801, 375769, 491401, 511225, 525625, 546121, 561001, 591361, 609961, 690561, 707281, 717409, 727609, 848241

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OFFSET

1,1

COMMENTS

Similar to A108323 but in base 10.

LINKS

Table of n, a(n) for n=1..35.

EXAMPLE

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

MATHEMATICA

Select[Range[1000]^2, PrimeQ@ FromDigits@ IntegerDigits[#, 2] &] (* Giovanni Resta, Oct 03 2018 *)

CROSSREFS