|
|
A321356
|
|
Primes of the form 3*2^k - 25.
|
|
0
|
|
|
23, 71, 167, 359, 743, 1511, 12263, 24551, 196583, 393191, 786407, 6291431, 25165799, 1610612711, 6442450919, 25769803751, 103079215079, 206158430183, 6597069766631, 864691128455135207, 27670116110564327399, 221360928884514619367, 1770887431076116955111
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
LINKS
|
|
|
MATHEMATICA
|
Select[3*2^Range[4, 100]-25 , PrimeQ] (* Amiram Eldar, Nov 15 2018 *)
|
|
PROG
|
(PARI) for(n=0, 20, if(ispseudoprime(p=3*2^n-25), print1(p, ", ")))
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
EXTENSIONS
|
|
|
STATUS
|
approved
|
|
|
|