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A096211
Primes of the form 10^n + 10^(n-3) - 1.
1
10009, 1000999, 10009999999999, 10009999999999999999999999999999999999, 10009999999999999999999999999999999999999999999999999999999999999, 10009999999999999999999999999999999999999999999999999999999999999999999999999
OFFSET
1,1
LINKS
MATHEMATICA
t={}; Do[m=n; p=10^n+10^(n-3)-1; If[PrimeQ[p], AppendTo[t, p]], {n, 300}]; t (* Vincenzo Librandi, Jul 17 2012 *)
PROG
(PARI) f(n, z) = for(x=z, n, y=10^x+10^(x-z)-1; if(ispseudoprime(y), print1(y", ")))
CROSSREFS
Sequence in context: A256838 A176931 A023335 * A190149 A052095 A033533
KEYWORD
nonn,easy
AUTHOR
Cino Hilliard, Jul 28 2004
STATUS
approved