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A219478 Prime numbers that are the mean of 5 successive primes. 2
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 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Zak Seidov, Table of n, a(n) for n = 1..1000

EXAMPLE

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

MATHEMATICA

Select[(Mean /@ Partition[Prime[Range[1000]], 5, 1]), PrimeQ]

CROSSREFS

Cf. A082077, A219505.

Sequence in context: A142932 A219505 A180455 * A082077 A158769 A158774

Adjacent sequences:  A219475 A219476 A219477 * A219479 A219480 A219481

KEYWORD

nonn

AUTHOR

Zak Seidov, Nov 20 2012

STATUS

approved

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Last modified July 21 12:27 EDT 2017. Contains 289642 sequences.