id:A083685 - OEIS Search Results

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Smallest primes of the form k*LCM(n) - 1 where LCM(n) is the least common multiple of numbers from 1 to n.

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2, 3, 5, 11, 59, 59, 419, 839, 5039, 5039, 55439, 55439, 1081079, 1081079, 1081079, 1441439, 24504479, 24504479, 232792559, 232792559, 232792559, 232792559, 5354228879, 5354228879, 53542288799, 53542288799, 1044074631599 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`a(9) = 5039. LCM of numbers from 1 to 9 = 2520. 2519 is not a prime but 2*2520 -1 = 5039 is a prime.`
	CROSSREFS	`Cf. A070858.` `Sequence in context: A000905 A065296 A114895 this_sequence A087524 A088053 A050444` `Adjacent sequences: A083682 A083683 A083684 this_sequence A083686 A083687 A083688`
	KEYWORD	`nonn`
	AUTHOR	`Amarnath Murthy and Meenakshi Srikanth (amarnath_murthy(AT)yahoo.com), Jun 15 2003`
	EXTENSIONS	`Corrected and extended by Vladeta Jovovic (vladeta(AT)eunet.rs), Jun 16 2003`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

AT&T Labs Research