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A095192
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Smallest semiprime with same leading digits as n!.
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0
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10, 21, 62, 247, 1202, 7201, 50401, 403201, 3628801, 36288001, 399168002, 4790016001, 62270208001, 871782912007, 130767436800017, 209227898880001, 3556874280960001, 64023737057280001, 12164510040883200031
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OFFSET
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1,1
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LINKS
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MATHEMATICA
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ssp[n_]:=Module[{f=n!, k=0}, While[PrimeOmega[10^Max[IntegerLength[k], 1] f+k]!=2, k++]; 10^Max[1, IntegerLength[k]] f+k]; Array[ssp, 20] (* Harvey P. Dale, May 05 2019 *)
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CROSSREFS
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KEYWORD
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base,nonn
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AUTHOR
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STATUS
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approved
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