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A208178
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Primes of the form 256*k + 1.
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9
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257, 769, 3329, 7681, 7937, 9473, 10753, 11777, 12289, 13313, 14081, 14593, 15361, 17921, 18433, 19457, 22273, 23041, 23297, 25601, 26113, 26881, 30977, 31489, 32257, 36097, 36353, 37633, 37889, 39937, 40193, 40961, 41729, 43777, 45569, 46337, 49409, 49921
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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 128th 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[256 Range[195] + 1, PrimeQ]
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PROG
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(PARI) for(n=1, 195, r=256*n+1; if(isprime(r), print1(r", ")));
(Magma) [ p: p in PrimesUpTo(50000) | p mod 256 eq 1 ];
(Haskell)
a208178 n = a208178_list !! (n-1)
a208178_list = filter ((== 1) . a010051) [1, 257..]
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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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