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A085149 n!!!!!-1 is prime. 3
3, 4, 6, 7, 8, 12, 13, 14, 27, 28, 33, 35, 44, 50, 62, 64, 74, 88, 114, 140, 142, 242, 248, 262, 270, 284, 395, 473, 582, 600, 634, 707, 805, 882, 907, 1008, 1152, 1243, 1853, 2340, 2410, 2703, 2793, 3033, 3600, 3925, 4124, 4154, 6185, 6367, 7130, 9104, 9992 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

COMMENTS

The search for multifactorial primes started by Ray Ballinger is now continued by a team of volunteers on the website of Ken Davis (see link).

LINKS

Ken Davis, Status of Search for Multifactorial Primes. This site continues the work started by Ray Ballinger.

Ken Davis, Results for n!5-1.

CROSSREFS

Cf. A085157 (quintuple factorials), A085148.

Sequence in context: A007609 A002191 A108348 * A007370 A044813 A154661

Adjacent sequences:  A085146 A085147 A085148 * A085150 A085151 A085152

KEYWORD

hard,nonn

AUTHOR

Hugo Pfoertner (hugo(AT)pfoertner.org), Jun 23 2003

EXTENSIONS

More terms from Herman Jamke (hermanjamke(AT)fastmail.fm), Jan 03 2008

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Last modified February 16 06:08 EST 2012. Contains 205860 sequences.