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A219478
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Prime numbers that are the mean of 5 successive primes.
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3
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79, 281, 349, 439, 643, 677, 787, 887, 1171, 1327, 1733, 1811, 2141, 2347, 2389, 2767, 2791, 3323, 3329, 3529, 3929, 4157, 4349, 4751, 4799, 4919, 4951, 5003, 5189, 5323, 5347, 5521, 5531, 5857, 5861, 6287, 6337, 6473, 6823, 6967, 6997, 7507, 7933, 8233
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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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a(1) = 79 = (prime(20)+...+prime(24))/5 = (71+ 73+ 79+ 83+ 89)/5
a(2) = 281 = (prime(58)+...+prime(62))/5 = (271+ 277+ 281+ 283+ 293)/5
a(8) = 887 = (prime(151)+...+prime(155))/5 = (877+ 881+ 883+ 887+ 907)/5
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MATHEMATICA
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Select[(Mean /@ Partition[Prime[Range[1000]], 5, 1]), PrimeQ]
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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