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A032480 Numbers n such that 207*2^n+1 is prime. +0
1
2, 3, 4, 6, 7, 10, 14, 15, 16, 34, 42, 44, 46, 62, 66, 106, 127, 130, 171, 202, 231, 232, 238, 248, 256, 296, 314, 412, 604, 956, 1023, 1287, 1454, 1564, 1766, 2036, 5215, 5911, 6092, 9190, 9916, 10410, 13456, 14336, 14444, 15490, 30835, 32558, 34770 (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

Ray Ballinger, Proth Search Page

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

CROSSREFS

Sequence in context: A119793 A035941 A039854 this_sequence A117851 A050679 A018723

Adjacent sequences: A032477 A032478 A032479 this_sequence A032481 A032482 A032483

KEYWORD

nonn,hard

AUTHOR

njas

page 1

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Last modified November 30 22:12 EST 2008. Contains 150989 sequences.


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