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Search: id:A006514
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| A006514 |
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2^p - 1 has at most 2 prime factors.
(Formerly M0653)
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+0
1
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| 2, 3, 5, 7, 11, 13, 17, 19, 23, 31, 37, 41, 59, 61, 67, 83, 89, 97, 101, 103, 107, 109, 127, 131, 137, 139, 149, 167, 197, 199, 227, 241, 269, 271, 281, 293, 347, 373, 379, 421, 457, 487, 521
(list; graph; listen)
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OFFSET
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1,1
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REFERENCES
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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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J. Brillhart et al., Factorizations of b^n +- 1, Contemporary Mathematics, Vol. 22, Amer. Math. Soc., Providence, RI, 3rd edition, 2002.
S. S. Wagstaff, Jr., The Cunningham Project
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CROSSREFS
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Sequence in context: A102348 A042966 A128898 this_sequence A086983 A046501 A033875
Adjacent sequences: A006511 A006512 A006513 this_sequence A006515 A006516 A006517
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KEYWORD
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nonn
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AUTHOR
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njas
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