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A050900 Numbers n such that 283*2^n-1 is prime. +0
1
11, 55, 91, 99, 235, 319, 1835, 16731, 25471, 31199, 123975, 149351 (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: A110159 A061983 A079884 this_sequence A047649 A010927 A009550

Adjacent sequences: A050897 A050898 A050899 this_sequence A050901 A050902 A050903

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 September 7 23:08 EDT 2008. Contains 143486 sequences.


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