OFFSET
1,1
COMMENTS
a(9) has 1738 digits. - Vincenzo Librandi, Jan 03 2014
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..8
Makoto Kamada, Prime numbers of the form 400...003.
MATHEMATICA
Select[Table[4 10^n + 3, {n, 0, 300}], PrimeQ] (* Vincenzo Librandi, Jan 03 2014 *)
PROG
(Magma) [a: n in [0..250] | IsPrime(a) where a is 4*10^n+3];
CROSSREFS
KEYWORD
nonn
AUTHOR
Vincenzo Librandi, Dec 11 2010
STATUS
approved