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A176987 Primes of the form 10^n-27. 2
73, 9973, 9999973, 99999999999973, 99999999999999999973, 9999999999999999999973, 99999999999999999999999999973, 9999999999999999999999999999973, 9999999999999999999999999999999999999973 (list; graph; refs; listen; history; text; internal format)
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 A210382 A091757

Adjacent sequences:  A176984 A176985 A176986 * A176988 A176989 A176990

KEYWORD

nonn

AUTHOR

Vincenzo Librandi, Dec 11 2010

STATUS

approved

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Last modified May 16 22:03 EDT 2021. Contains 343955 sequences. (Running on oeis4.)