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A236752
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Primes of the form k*2^(k-1) - 1.
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3
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3, 11, 31, 79, 191, 5119, 245759, 524287, 1114111, 3758096383, 1618481116086271, 653980173926178609468673073657929531391, 5359447279004780799548150067050349330431
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OFFSET
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1,1
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COMMENTS
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Primes in A087323.
Corresponding values of k: 2, 3, 4, 5, 6, 10, 15, 16, 17, 28, 46, 123, ...
The values of k-1 are listed in A230769. - Jeppe Stig Nielsen, Oct 16 2019
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LINKS
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Table of n, a(n) for n=1..13.
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EXAMPLE
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79 is in this sequence because it is prime and for k = 5, k*2^(k-1) - 1 = 5*2^(5-1) - 1 = 79.
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CROSSREFS
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Cf. A002054, A003261, A196273, A230769.
Sequence in context: A341705 A241693 A087323 * A034543 A268800 A054343
Adjacent sequences: A236749 A236750 A236751 * A236753 A236754 A236755
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KEYWORD
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nonn
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AUTHOR
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Gerasimov Sergey, Jan 30 2014
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EXTENSIONS
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More terms and corrections of terms and comments by Ralf Stephan, Feb 03 2014
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STATUS
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approved
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