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A125034
Primes of the form 2^n - 69.
2
59, 443, 1979, 4027, 8123, 524219, 1048507, 2097083, 8388539, 2147483579, 34359738299, 137438953403, 35184372088763, 144115188075855803, 9444732965739290427323, 19342813113834066795298747
OFFSET
1,1
COMMENTS
Corresponding n's are 7, 9, 11, 12, 13, 19, 20, 21, 23, 31, 35, 37, 45, 57, 73, 84, 89.
LINKS
EXAMPLE
2^7-69=59 (prime), 2^9-69=443 (prime), 2^11-69=1979(prime).
MATHEMATICA
Select[Table[2^n - 69, {n, 7, 100}], PrimeQ] (* Vincenzo Librandi, Mar 21 2013 *)
PROG
(Magma) [a: n in [7..100] | IsPrime(a) where a is 2^n - 69]; // Vincenzo Librandi, Mar 21 2013
CROSSREFS
Cf. A124977.
Sequence in context: A235223 A235216 A284754 * A140024 A219064 A263127
KEYWORD
nonn
AUTHOR
Zak Seidov, Nov 17 2006
STATUS
approved