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2, 7, 17, 23, 47, 73, 79, 89, 97, 103, 113, 127, 137, 167, 193, 199, 223, 233, 239, 241, 257, 263, 313, 337, 353, 359, 367, 383, 409, 431, 433, 439, 449, 457, 463, 479, 487, 503, 569, 577, 593, 599, 607, 617, 641, 647, 673, 719, 727, 743, 769, 809, 823, 839
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refs;
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OFFSET
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1,1
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COMMENTS
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LINKS
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MATHEMATICA
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ok[p_]:= Reduce[Mod[x^50 - 2, p] == 0, x, Integers] =!= False; Select[Prime[Range[200]], ok] (* Vincenzo Librandi, Sep 14 2012 *)
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PROG
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(Magma) [p: p in PrimesUpTo(900) | exists(t){x : x in ResidueClassRing(p) | x^50 eq 2}]; // Vincenzo Librandi, Sep 14 2012
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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STATUS
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approved
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