Search: id:A002982 Results 1-1 of 1 results found. %I A002982 M2321 %S A002982 3,4,6,7,12,14,30,32,33,38,94,166,324,379,469,546,974,1963,3507,3610, %T A002982 6917,21480,34790 %N A002982 Numbers n such that n! - 1 is prime. %D A002982 A. Borning, Some results for k!+-1 and 2.3.5...p+-1, Math. Comp., 26 (1972), 567-570. %D A002982 J. P. Buhler et al., Primes of the form n!+-1 and 2.3.5....p+-1, Math. Comp., 38 (1982), 639-643. %D A002982 C. K. Caldwell and Y. Gallot, On the primality of n!+-1 and 2*3*5*...*p+-1, Math. Comp., 71 (2001), 441-448. %D A002982 J.-M. De Koninck, Ces nombres qui nous fascinent, Entry 166, p. 53, Ellipses, Paris 2008. %D A002982 R. K. Guy, Unsolved Problems in Number Theory, Section A2. %D A002982 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence). %H A002982 Author?, Title? %H A002982 C. K. Caldwell, The Prime Pages %H A002982 C. K. Caldwell, Primorial factorial numbers %H A002982 P. Carmody, Factorial Prime Search Progress Pages %H A002982 R. Ondrejka, The Top Ten: a Catalogue of Primal Configurations %H A002982 Eric Weisstein's World of Mathematics, Link to a section of The World of Mathematics (1). %H A002982 Eric Weisstein's World of Mathematics, Link to a section of The World of Mathematics (2). %H A002982 Eric Weisstein's World of Mathematics, Integer Sequence Primes %H A002982 Index entries for sequences related to factorial numbers %H A002982 The prime 34790!-1 was discovered by Leon Marchal on May 16, 2002. - Rick L. Shepherd (rshepherd2(AT)hotmail.com), Jul 18 2002 %t A002982 Select[Range[10^3], PrimeQ[ #!-1] &] (from Vladimir Orlovsky (4vladimir(AT)gmail.com), May 01 2008) %Y A002982 Cf. A002981 (primes of form n!+1). %Y A002982 Sequence in context: A153883 A033162 A105133 this_sequence A093707 A058639 A161001 %Y A002982 Adjacent sequences: A002979 A002980 A002981 this_sequence A002983 A002984 A002985 %K A002982 hard,nonn,nice %O A002982 1,1 %A A002982 N. J. A. Sloane (njas(AT)research.att.com). %E A002982 21480 sent in by Ken Davis (ken.davis(AT)softwareag.com), Oct 29 2001 %E A002982 Updated Feb 26 2007 by Max Alekseyev, based on progress reported in the Carmody web site. Search completed in 0.002 seconds