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Search: id:A108332
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| A108332 |
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Integers n such that 10^n-89 is prime. |
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+0
3
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OFFSET
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1,1
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COMMENT
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Some of the larger entries may only correspond to probable primes.
637 corresponds to a certified prime (Primo 2.2.0 beta). No more terms through 10,000. - Ryan Propper (rpropper(AT)stanford.edu), Nov 06 2005
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EXAMPLE
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n = 3 is a member because: 10^3-89 = 1000-89 = 911, which is prime.
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MATHEMATICA
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Do[If[PrimeQ[10^n - 89], Print[n]], {n, 2, 10^4}] (Propper)
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CROSSREFS
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Cf. A089675, A095714, A092767.
Sequence in context: A128874 A090510 A004887 this_sequence A066685 A076155 A004898
Adjacent sequences: A108329 A108330 A108331 this_sequence A108333 A108334 A108335
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KEYWORD
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hard,nonn
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AUTHOR
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Julien Peter Benney (jpbenney(AT)ftml.net), Jun 30 2005
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