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Search: id:A046107
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| A046107 |
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Triangle of prime numbers in which n-th row lists all primes p such that 1/p has decimal period n, n >= 1. |
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+0
10
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| 3, 11, 37, 101, 41, 271, 7, 13, 239, 4649, 73, 137, 333667, 9091, 21649, 513239, 9901, 53, 79, 265371653, 909091, 31, 2906161, 17, 5882353, 2071723, 5363222357, 19, 52579, 1111111111111111111, 3541, 27961, 43, 1933, 10838689, 23, 4093
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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The number of numbers in each row n is given by A112505(n).
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LINKS
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Eric Weisstein's World of Mathematics, Link to a section of The World of Mathematics.
Index entries for sequences related to decimal expansion of 1/n
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EXAMPLE
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3; 11; 37; 101; 41,271; 7,13; ...
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MATHEMATICA
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pp={}; Do[f=Transpose[FactorInteger[10^n-1]][[1]]; p=Complement[f, pp]; pp=Union[pp, p]; Print[p], {n, 66}] - T. D. Noe (noe(AT)sspectra.com), Sep 08 2005
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CROSSREFS
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Cf. A007138.
Sequence in context: A108544 A095088 A007138 this_sequence A061075 A005422 A040017
Adjacent sequences: A046104 A046105 A046106 this_sequence A046108 A046109 A046110
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KEYWORD
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nonn,tabf
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AUTHOR
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Eric Weisstein (eric(AT)weisstein.com)
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