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Search: id:A066413
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| 7, 271, 2269, 176419, 129159847, 1162320517, 49269609804781974450852068861184694669, 589881151426658740854227725580736348850640632297373414091790995505756623268837, 12145129806852984423355341656871496425662252062718286090319252122777281179254085\ 9581853676161
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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Analogues of Mersenne primes in Eisenstein integers.
The norm of a + b*w is (a+b*w)*(a+b*w^2) = a^2 - a*b + b^2.
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REFERENCES
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Mike Oakes, email dated Dec 24 2001 to primenumbers(AT)yahoogroups.com
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EXAMPLE
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For n = 7, (1-w)^7 - 1 has norm 2269, a prime.
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CROSSREFS
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Cf. A066408.
Sequence in context: A015089 A069449 A140031 this_sequence A037067 A065581 A062646
Adjacent sequences: A066410 A066411 A066412 this_sequence A066414 A066415 A066416
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KEYWORD
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nonn,nice
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AUTHOR
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Mike Oakes (mikeoakes2(AT)aol.com), Dec 24 2001
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