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A176116
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Primes p such that p^4+1 = 2q where q is prime.
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11
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3, 5, 7, 11, 13, 17, 23, 29, 61, 71, 73, 103, 113, 199, 251, 313, 317, 337, 353, 419, 431, 449, 463, 479, 487, 503, 523, 607, 613, 643, 677, 701, 719, 761, 769, 811, 821, 829, 857, 883, 919, 997, 1013, 1019, 1049, 1087, 1123, 1163, 1259, 1327, 1381, 1483, 1493
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OFFSET
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1,1
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LINKS
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EXAMPLE
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3^4+1 = 2*41; 5^4+1 = 2*313; 7^4+1 = 2*1201; 11^4+1 = 2*7321.
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MATHEMATICA
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Select[Prime[Range[250]], PrimeQ[(#^4+1)/2]&] (* Harvey P. Dale, Jul 20 2012 *)
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PROG
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(PARI) lista(nn) = forprime(p=3, nn, if (isprime((p^4+1)/2), print1(p, ", ")); ); \\ Michel Marcus, Oct 03 2016
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CROSSREFS
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KEYWORD
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easy,nonn
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AUTHOR
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Kevin Batista (kevin762401(AT)yahoo.com), Apr 08 2010
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EXTENSIONS
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STATUS
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approved
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