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A050577 Numbers n such that 103*2^n-1 is prime. +0
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3, 7, 11, 19, 63, 75, 95, 127, 155, 163, 171, 283, 563, 1739, 2243, 3971, 4375, 5227, 8307, 9943, 18383, 19835, 25879, 26927, 36895, 304771, 422939 (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

Adjacent sequences: A050574 A050575 A050576 this_sequence A050578 A050579 A050580

Sequence in context: A060288 A111056 A083908 this_sequence A095352 A061258 A057660

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 October 9 14:06 EDT 2008. Contains 144831 sequences.


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