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A032373 Numbers k such that 47*2^k+1 is prime. 3
583, 1483, 6115 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Next term >= 4100000. - Joerg Arndt, Apr 07 2013
LINKS
Ray Ballinger, Proth Search Page
Ray Ballinger and Wilfrid Keller, List of primes k.2^n + 1 for k < 300
PROG
(PARI) is(n)=ispseudoprime(47*2^n+1) \\ Charles R Greathouse IV, Feb 20 2017
CROSSREFS
Sequence in context: A059468 A350663 A122694 * A236486 A236491 A235433
KEYWORD
nonn,hard,bref
AUTHOR
STATUS
approved

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Last modified February 20 18:38 EST 2024. Contains 370217 sequences. (Running on oeis4.)