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A208177
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Primes of the form 128*k + 1.
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9
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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
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OFFSET
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1,1
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COMMENTS
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Odd primes p such that -1 is a 64th power mod p. - Eric M. Schmidt, Mar 27 2014
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LINKS
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FORMULA
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MATHEMATICA
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Select[128 Range[167] + 1, PrimeQ]
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PROG
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(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..]
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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STATUS
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approved
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