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A087832 Numbers k such that k*primorial(2473)-1 is prime. 4
131, 167, 215, 252, 393, 559, 616, 646, 819, 860, 875, 888, 1323, 1364, 1393, 1435, 1523, 1598, 1669, 1734, 1891, 1924, 1951, 2236, 2576, 2761, 2848, 2887, 3138, 3221, 4455, 4540, 4592, 4812, 4818, 5002, 5165, 5188, 5227, 5237, 5306, 5314, 5453, 5540, 5621, 5702 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

The "2473" sequence has rather many terms below 2473.

LINKS

Table of n, a(n) for n=1..46.

FORMULA

a(n) ~ c * n log n with c = 0.07162.... [Charles R Greathouse IV, Dec 28 2011]

PROG

(PARI) N=prod(n=1, 366, prime(n)); for(k=1, 1e5, if(ispseudoprime(k*N-1), print1(k", "))) \\ Charles R Greathouse IV, Dec 28 2011

CROSSREFS

Cf. A002110, A087730, A087832.

Sequence in context: A270237 A090264 A132254 * A335271 A140623 A050261

Adjacent sequences:  A087829 A087830 A087831 * A087833 A087834 A087835

KEYWORD

nonn

AUTHOR

Pierre CAMI, Oct 07 2003

EXTENSIONS

Edited by Don Reble, Nov 09 2005

a(25)-a(46) from Charles R Greathouse IV, Dec 28 2011

STATUS

approved

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Last modified January 25 14:42 EST 2021. Contains 340416 sequences. (Running on oeis4.)