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A032499 Numbers n such that 245*2^n+1 is prime. +0
1
1, 5, 9, 25, 69, 73, 99, 153, 163, 223, 273, 279, 331, 439, 445, 595, 601, 1189, 2311, 3523, 3773, 5369, 6349, 8743, 14083, 25225, 25371, 37773, 60615, 123471, 136993 (list; graph; listen)
OFFSET

1,2

LINKS

Ray Ballinger, Proth Search Page

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

CROSSREFS

Sequence in context: A147512 A050359 A062812 this_sequence A112084 A038251 A034498

Adjacent sequences: A032496 A032497 A032498 this_sequence A032500 A032501 A032502

KEYWORD

nonn,hard

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

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Last modified December 11 12:57 EST 2009. Contains 170656 sequences.


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