id:A113576 - OEIS Search Results

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Least (2n-1)-digit palindromic prime == 1 (mod 2n-1), or 0 if no such prime exists.

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2

2, 151, 10301, 1008001, 100161001, 10002520001, 1000605060001, 100000323000001, 10000007070000001, 1000000310130000001, 100000000212000000001, 10000000001710000000001, 1000000000016100000000001, 100000000000656000000000001, 10000000000004740000000000001 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`Conjecture: No term is zero.`
	EXAMPLE	`a(3) = 10301 == 1 mod 5.`
	CROSSREFS	`Cf. A113575.` `Adjacent sequences: A113573 A113574 A113575 this_sequence A113577 A113578 A113579` `Sequence in context: A128350 A046473 A024245 this_sequence A102458 A064436 A012605`
	KEYWORD	`base,easy,nonn`
	AUTHOR	`Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Nov 06 2005`
	EXTENSIONS	`More terms from R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Aug 28 2007`

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Last modified May 16 23:01 EDT 2008. Contains 139884 sequences.

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