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A208177
Primes of the form 128*k + 1.
10
257, 641, 769, 1153, 1409, 2689, 3329, 3457, 4481, 4993, 6529, 7297, 7681, 7937, 9473, 9601, 9857, 10369, 10753, 11393, 11777, 12161, 12289, 13313, 13441, 13697, 14081, 14593, 15233, 15361, 16001, 17921, 18049, 18433, 19073, 19457, 19841, 20353, 21121, 21377
OFFSET
1,1
COMMENTS
Odd primes p such that -1 is a 64th power mod p. - Eric M. Schmidt, Mar 27 2014
LINKS
FORMULA
a(n) ~ 64n log n. - Charles R Greathouse IV, Nov 01 2022
MATHEMATICA
Select[128 Range[167] + 1, PrimeQ]
PROG
(PARI) for(n=1, 167, r=128*n+1; if(isprime(r), print1(r", ")));
(Magma) [ p: p in PrimesUpTo(22000) | p mod 128 eq 1 ];
(Haskell)
a208177 n = a208177_list !! (n-1)
a208177_list = filter ((== 1) . a010051) [1, 129..]
-- Reinhard Zumkeller, Mar 06 2012
KEYWORD
nonn,easy
AUTHOR
Bruno Berselli, Feb 25 2012
STATUS
approved