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Search: id:A075050
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| A075050 |
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Primes for which the eight closest primes are smaller. |
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+0
8
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| 15683, 31397, 43801, 44293, 89689, 221101, 248909, 265621, 282713, 341357, 349423, 370261, 396733, 399283, 404851, 440581, 492113, 517639, 520451, 542603, 544031, 561109, 566453, 566567, 576791, 604073, 626629, 639757, 673669, 678659
(list; graph; listen)
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OFFSET
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1,1
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EXAMPLE
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The eight closest primes to 15683 are 15679 (difference = 4), 15671 (difference = 12), 15667 (difference = 16), 15661 (difference = 22), 15649 (difference = 34), 15647 (difference = 36), 15643 (difference = 40), and 15641 (difference = 42). These are all smaller than 15683 so 15683 is in the list.
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MATHEMATICA
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NextPrim[n_] := Block[{k = n + 1}, While[ !PrimeQ[k], k++ ]; k]; ps = {0, 0, 0, 0, 0, 0, 0, 0, 0, 1}; Do[ps = Drop[ps, 1]; ps = Append[ps, NextPrim[ ps[[ -1]]]]; If[ ps[[ -1]] - ps[[ -2]] > ps[[ -2]] - ps[[1]], Print[ ps[[ -2]]]], {n, 1, 58393}]
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CROSSREFS
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Cf. A001223, A074979, A074982, A075030, A075037, A075038, A075043 and A075051.
Adjacent sequences: A075047 A075048 A075049 this_sequence A075051 A075052 A075053
Sequence in context: A017586 A075043 A109567 this_sequence A134121 A116493 A061733
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KEYWORD
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nonn
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AUTHOR
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N. Fernandez (primeness(AT)borve.org), Oct 10 2002
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EXTENSIONS
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Edited and extended by Robert G. Wilson v (rgwv(AT)rgwv.com), Oct 11 2002
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