A176987 Primes of the form 10^n-27.

73, 9973, 9999973, 99999999999973, 99999999999999999973, 9999999999999999999973, 99999999999999999999999999973, 9999999999999999999999999999973, 9999999999999999999999999999999999999973

Offset

1,1

Links

Vincenzo Librandi, Table of n, a(n) for n = 1..14

Mathematica

Select[Table[10^n - 27, {n, 2, 500}], PrimeQ] (* Vincenzo Librandi, Jan 03 2014 *)

Prog

(Magma) [a: n in [2..250]|IsPrime(a) where a is 10^n-27];

Crossrefs

Cf. A108329.

Sequence in context: A177094 A116241 A105322 * A174747 A364301 A210382

Adjacent sequences: A176984 A176985 A176986 * A176988 A176989 A176990

Keyword

nonn

Author

Vincenzo Librandi, Dec 11 2010

Status

approved