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Search: id:A003260
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| A003260 |
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Largest factor of Mersenne numbers.
(Formerly M2693)
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+0
9
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| 3, 7, 31, 127, 89, 8191, 131071, 524287, 178481, 2089, 2147483647, 616318177, 164511353, 2099863, 13264529, 20394401, 3203431780337, 2305843009213693951
(list; graph; listen)
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OFFSET
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1,1
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REFERENCES
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N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
J. Brillhart et al., Factorizations of b^n +- 1. Contemporary Mathematics, Vol. 22, Amer. Math. Soc., Providence, RI, 2nd edition, 1985; and later supplements.
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LINKS
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T. D. Noe, Table of n, a(n) for n=1..95 (derived from Brillhart et al.)
J. Brillhart et al., Factorizations of b^n +- 1, Contemporary Mathematics, Vol. 22, Amer. Math. Soc., Providence, RI, 3rd edition, 2002.
C. K. Caldwell, Mersenne primes
S. S. Wagstaff, Jr., The Cunningham Project
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CROSSREFS
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Cf. A001348.
Cf. A016047, A046800
Sequence in context: A103901 A089162 A016047 this_sequence A152058 A138865 A051281
Adjacent sequences: A003257 A003258 A003259 this_sequence A003261 A003262 A003263
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KEYWORD
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nonn,nice
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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