A177418 Primes of the form 10^n - 59.

41, 941, 9941, 99999941, 99999999999999999941, 99999999999999999999999999999999999941, 99999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999941

Offset

1,1

Comments

The next term (a(8)) has 248 digits. [From Harvey P. Dale, Dec 29 2011]

Links

Table of n, a(n) for n=1..7.

Mathematica

Select[10^Range[0, 400] - 59, PrimeQ] (* Harvey P. Dale, Dec 29 2011 *)
Select[Table[FromDigits[PadLeft[{4, 1}, n, 9]], {n, 2, 400}], PrimeQ] (* Harvey P. Dale, Feb 08 2024 *)

Prog

(Magma) [a: n in [2..250] | IsPrime(a) where a is 10^n-59];

Crossrefs

Cf. A108506.

Sequence in context: A114529 A300173 A293619 * A038397 A104349 A091314

Adjacent sequences: A177415 A177416 A177417 * A177419 A177420 A177421

Keyword

nonn

Author

Vincenzo Librandi, Dec 11 2010

Status

approved