A177120 Primes of the form (5*10^n+3).

53, 503, 5003, 500000003, 5000000000000000003, 500000000000000000003, 50000000000000000000000000000003, 5000000000000000000000000000000000000000003

Offset

1,1

Links

Vincenzo Librandi, Table of n, a(n) for n = 1..13

Makoto Kamada, Prime numbers of the form 500...003.

Mathematica

Select[5 10^Range[80] + 3, PrimeQ] (* Vincenzo Librandi, May 11 2013 *)

Prog

(Magma)[ a: n in [0..250]|IsPrime(a) where a is 5*10^n+3]

Crossrefs

Cf. A096254.

Sequence in context: A142209 A322043 A293089 * A165555 A201855 A112749

Adjacent sequences: A177117 A177118 A177119 * A177121 A177122 A177123

Keyword

nonn

Author

Vincenzo Librandi, Dec 10 2010

Status

approved