id:A089726 - OEIS Search Results

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Smallest prime of the form nk+1, k > n.

+0
2

3, 7, 13, 29, 31, 43, 71, 73, 109, 131, 199, 157, 313, 211, 241, 337, 307, 379, 419, 421, 463, 617, 599, 601, 701, 859, 757, 953, 929, 991, 1117, 1153, 1123, 1259, 1471, 1549, 1481, 1483, 1873, 1721, 1723, 1933, 1979, 2069, 2161, 2347, 2351, 2593, 2549, 2551 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`a(7)=21 because 710+1=71 is prime, whereas 78+1=57 and 7*9+1=64 are composite.`
	CROSSREFS	`Cf. A089727.` `Adjacent sequences: A089723 A089724 A089725 this_sequence A089727 A089728 A089729` `Sequence in context: A080241 A098479 A119445 this_sequence A093575 A080166 A116872`
	KEYWORD	`nonn`
	AUTHOR	`Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Nov 18 2003`
	EXTENSIONS	`More terms from Hugo Pfoertner (hugo(AT)pfoertner.org), Apr 01 2004`

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Last modified October 13 20:18 EDT 2008. Contains 145016 sequences.

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