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Search: id:A050920
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| A050920 |
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Cullen primes: primes of the form n*2^n+1. |
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+0
2
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OFFSET
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1,1
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COMMENT
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The next term is too large to display here, having 1423 digits. See A005849.
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LINKS
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Ray Ballinger, Cullen Primes: Definition and Status
C. K. Caldwell, Cullen Primes
Eric Weisstein's World of Mathematics, Cullen Number
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MATHEMATICA
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lst={}; Do[If[PrimeQ[p=n*2^n+1], Print[p]; AppendTo[lst, p]], {n, 10^9}]; lst [From Vladimir Orlovsky (4vladimir(AT)gmail.com), Aug 21 2008]
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CROSSREFS
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See A005849 for more terms.
Adjacent sequences: A050917 A050918 A050919 this_sequence A050921 A050922 A050923
Sequence in context: A068740 A058473 A115527 this_sequence A001231 A141150 A089418
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KEYWORD
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nonn,easy,nice,bref
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com), Dec 30 1999
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