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Search: id:A092901
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OFFSET
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0,3
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COMMENT
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Buhler maintains a list of regular and irregular primes. Data about each irregular prime includes the index of irregularity, irregular pairs, Vandiver residue and two cyclotomic residues.
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REFERENCES
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J. Buhler, R. Crandall, R. Ernvall, T. Metsankyla and M. A. Shokrollahi, Irregular Primes and Cyclotomic Invariants to 12 Million, J. Symbolic Computation 31, 2001, 89-96.
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LINKS
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Eric Weisstein's World of Mathematics, Irregular Prime
J. P. Buhler, Irregular primes less than 12,000,000 (FTP)
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EXAMPLE
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The smallest irregular prime is 37.
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CROSSREFS
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Cf. A000928.
Sequence in context: A156904 A053857 A037108 this_sequence A105459 A099338 A119924
Adjacent sequences: A092898 A092899 A092900 this_sequence A092902 A092903 A092904
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KEYWORD
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nonn,more
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AUTHOR
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Eric Weisstein (eric(AT)weisstein.com), Mar 13, 2004
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EXTENSIONS
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a(6) and a(7) from T. D. Noe (noe(AT)sspectra.com), Mar 31 2004
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