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A177190
Primes of the form 5*10^n - 3.
0
2, 47, 4999999999999997, 499999999999999999999999999999999999999997, 49999999999999999999999999999999999999999999999999999999999999997
OFFSET
1,1
COMMENTS
The next term has 132 digits. - Harvey P. Dale, Jun 29 2011
MATHEMATICA
Join[{2}, Select[10#+7&/@(FromDigits/@Table[PadRight[{4, 9}, n, 9], {n, 150}]), PrimeQ]] (* Harvey P. Dale, Jun 29 2011 *)
PROG
(Magma) [a: n in [0..250] | IsPrime(a) where a is 5*10^n-3];
CROSSREFS
Cf. A103003.
Sequence in context: A079307 A368193 A005814 * A087259 A195876 A326778
KEYWORD
nonn
AUTHOR
Vincenzo Librandi, Dec 10 2010
STATUS
approved