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A086563
Smallest number of the form 10^k +1 with n distinct prime divisors.
1
2, 10001, 1001, 100000000001, 1000000001, 1000000000000000000000000000000000001, 1000000000000001, 1000000000000000000000000000000001, 1000000000000000000000000000000000000001
OFFSET
1,1
EXAMPLE
a(5) = 1000000001= 7*11*13*19*52579 has five prime divisors.
MATHEMATICA
With[{c=10^Range[0, 40]+1}, Flatten[Table[Select[c, PrimeNu[#]==n&, 1], {n, 10}]]] (* Harvey P. Dale, Aug 12 2012 *)
CROSSREFS
Cf. A085564.
Sequence in context: A285692 A340546 A343700 * A023328 A294324 A349510
KEYWORD
nonn
AUTHOR
Amarnath Murthy, Aug 31 2003
EXTENSIONS
More terms from Sascha Kurz, Sep 22 2003
STATUS
approved