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A141889
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Primes congruent to 4 mod 21.
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1
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67, 109, 151, 193, 277, 487, 571, 613, 739, 823, 907, 991, 1033, 1117, 1201, 1327, 1453, 1579, 1621, 1663, 1747, 1789, 1831, 1873, 1999, 2083, 2251, 2293, 2377, 2503, 2671, 2713, 2797, 3049, 3217, 3259, 3301, 3343, 3469, 3511, 3637, 3847, 3889, 3931, 4057
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listen;
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OFFSET
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1,1
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LINKS
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FORMULA
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MATHEMATICA
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PROG
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(Magma) [p: p in PrimesUpTo(6000) | p mod 21 eq 4 ]; // Vincenzo Librandi, Aug 16 2012
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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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