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A087832
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Numbers k such that k*primorial(2473)-1 is prime.
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4
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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; internal format)
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OFFSET
| 1,1
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COMMENTS
| The "2473" sequence has rather many terms below 2473.
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FORMULA
| a(n) ~ c * n log n with c = 0.07162.... [Charles R Greathouse IV, Dec 28 2011]
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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
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CROSSREFS
| Cf. A002110, A087730, A087832.
Sequence in context: A155924 A090264 A132254 * A140623 A050261 A180544
Adjacent sequences: A087829 A087830 A087831 * A087833 A087834 A087835
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KEYWORD
| nonn
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AUTHOR
| Pierre CAMI (colettecami(AT)aol.com), Oct 07 2003
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EXTENSIONS
| Edited by Don Reble (djr(AT)nk.ca), Nov 09 2005
a(25)-a(46) from Charles R Greathouse IV, Dec 28 2011
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