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A050850 Numbers n such that 197*2^n-1 is prime. +0
1
2, 16, 20, 22, 40, 82, 112, 178, 230, 302, 304, 328, 374, 442, 472, 500, 580, 694, 1264, 1634, 1784, 3080, 5722, 7174, 8908, 18502, 18746, 39094, 99338, 170066, 202534, 325610, 510940, 569222, 635042, 825188 (list; graph; listen)
OFFSET

1,1

LINKS

Ray Ballinger and Wilfrid Keller, List of primes k.2^n + 1 for k < 300

Wilfrid Keller, List of primes k.2^n - 1 for k < 300

Index entries for sequences of n such that k*2^n-1 (or k*2^n+1) is prime

Kosmaj, Riesel list k<300.

CROSSREFS

Sequence in context: A114974 A101075 A022370 this_sequence A082475 A081767 A093026

Adjacent sequences: A050847 A050848 A050849 this_sequence A050851 A050852 A050853

KEYWORD

hard,nonn

AUTHOR

njas, Dec 29 1999

EXTENSIONS

More terms from Herman Jamke (hermanjamke(AT)fastmail.fm), Jan 02 2008

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Last modified July 25 07:41 EDT 2008. Contains 142293 sequences.


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