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Search: id:A108054
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| A108054 |
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Integers n such that 10^n+49 is prime. |
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+0
27
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| 1, 2, 3, 5, 8, 17, 24, 32, 65, 66, 67, 79, 83, 98, 152, 260, 781, 1225, 1777, 2023, 2411, 3469, 5347
(list; graph; listen)
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OFFSET
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1,2
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COMMENT
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Some of the larger entries may only correspond to probable primes.
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EXAMPLE
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n = 8 = 10^8+49 = 100000049, which is prime.
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MATHEMATICA
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a={}; Do[p=10^n+49; If[PrimeQ[p], AppendTo[a, n]], {n, 0, 10^3, 1}]; a - Vladimir Orlovsky, Jul 17 2008
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CROSSREFS
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Cf. A049054, A088274, A088275, A095688.
Adjacent sequences: A108051 A108052 A108053 this_sequence A108055 A108056 A108057
Sequence in context: A030034 A093000 A122630 this_sequence A123612 A077177 A113879
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KEYWORD
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hard,more,nonn
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AUTHOR
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Julien Peter Benney (jpbenney(AT)ftml.net), Jun 02 2005
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EXTENSIONS
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5347 from Ray G. Opao (1260(AT)email.com), Dec 13 2006
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