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A065316 Largest prime divisor of n-th primorial - (n+1)-st prime. 0
23, 199, 2297, 30013, 12451, 9699667, 79139, 122069683, 9241993, 77184383, 211941187, 72280449346243, 73629553, 142226610221, 131076443530861861, 382046844818915214929, 1348764323657, 1822793973448088839487 (list; graph; refs; listen; history; text; internal format)
OFFSET

3,1

LINKS

Table of n, a(n) for n=3..20.

R. Mestrovic, Euclid's theorem on the infinitude of primes: a historical survey of its proofs (300 BC--2012) and another new proof, arXiv preprint arXiv:1202.3670, 2012 - From N. J. A. Sloane, Jun 13 2012

FORMULA

a(n)=A006530[A002110(n)-A000040(n+1)]

EXAMPLE

n=3, 3rd primorial=30, 4t prime=7. difference=23, a(3)=23.

CROSSREFS

Cf. A002110, A000040, A006530, A006530, A057713, A002584, A002585, A051342 A065314-A065317.

Sequence in context: A307355 A058193 A065314 * A060882 A221670 A128334

Adjacent sequences:  A065313 A065314 A065315 * A065317 A065318 A065319

KEYWORD

nonn

AUTHOR

Labos Elemer, Oct 29 2001

STATUS

approved

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Last modified June 18 07:15 EDT 2019. Contains 324203 sequences. (Running on oeis4.)