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A093172
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Primes of the form 10^n - 3.
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2
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OFFSET
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1,1
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COMMENTS
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Also primes of the form 9*R_n - 2, where R_n is the repunit (A002275) of length n.
The next term has 140 digits.
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LINKS
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MATHEMATICA
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Select[Table[FromDigits[PadLeft[{7}, n, 9]], {n, 25}], PrimeQ] (* Harvey P. Dale, Dec 12 2020 *)
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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Name shortened and old name moved to comments by Alex Ratushnyak, Apr 26 2012
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STATUS
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approved
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