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A152964
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Beginnings of maximal chains of primes with eight members (seven links).
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7
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OFFSET
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1,1
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COMMENTS
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For definitions see A152658, of which this is a subsequence.
Terms were computed by Farideh Firoozbakht (see C. Rivera link), who remarks that there are no other terms with prime indices up to 372*10^6, i.e., terms below approx. 8*10^9. The prime indices of the given terms are 321150, 31757516, 134558368, 159849354, 178323284.
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LINKS
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Carlos Rivera, The prime puzzles & problems connection, Puzzle 463
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EXAMPLE
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First maximal chain of primes with eight members is 4580041, 4580077, 4580117, 4580131, 4580141, 4580143, 4580201, 4580209; the seven linking primes are 2941776475777, 2941810043411, 2941836545827, 2941853413757, 2941866427879, 2941894857 521, 2941925214169.
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CROSSREFS
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Cf. A152962 (beginning of the first maximal chain of primes with n links), A152658 (beginnings of maximal chains of primes), A152735 (count of links in n-th maximal chain of primes), A119487 (primes of the form i*(i-th prime) + (i+1)*((i+1)-th prime), linking primes), A152865, A152866, A152867, A152868, A152869, A152963.
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KEYWORD
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hard,more,nonn
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AUTHOR
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STATUS
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approved
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