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A079822
Smallest n-digit multiple of the n-th composite number.
0
4, 12, 104, 1008, 10000, 100008, 1000006, 10000005, 100000000, 1000000008, 10000000000, 100000000002, 1000000000010, 10000000000008, 100000000000000, 1000000000000014, 10000000000000017
OFFSET
1,1
MATHEMATICA
nm[{a_, b_}]:=Module[{c=Mod[10^(a-1), b]}, If[c==0, 10^(a-1), 10^(a-1)+b-c]]; nm/@ With[{nn=25}, Thread[{Range[nn], Rest[Complement[Range[ nn+ PrimePi[nn]+ 1], Prime[Range[PrimePi[nn+1]]]]]}]] (* Harvey P. Dale, Feb 14 2012 *)
CROSSREFS
Cf. A079821.
Sequence in context: A120267 A012278 A070040 * A216043 A245647 A080448
KEYWORD
base,nonn
AUTHOR
Amarnath Murthy, Feb 11 2003
EXTENSIONS
More terms from Erich Friedman, Aug 08 2005
STATUS
approved