A109617 - OEIS

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A109617

Numbers n such that (10's complement factorial of n) - 1 is prime.

2, 3, 4, 7, 77, 337, 397, 566 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,1`
	COMMENTS	`Larger values not certified.`
	EXAMPLE	`a(2)=3 because (10-3)(10-2)(10-1) - 1 = 503 is prime.`
	CROSSREFS	`Cf. A110396.` `Sequence in context: A070527 A158652 A127074 * A181881 A071373 A175060` `Adjacent sequences: A109614 A109615 A109616 * A109618 A109619 A109620`
	KEYWORD	`more,nonn`
	AUTHOR	`Jason Earls (zevi_35711(AT)yahoo.com), Aug 01 2005`

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Last modified February 15 21:56 EST 2012. Contains 205860 sequences.