id:A113575 - OEIS Search Results

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

+0
2

2, 101, 10501, 1003001, 100030001, 10000500001, 1000024200001, 100000323000001, 10000005750000001, 1000000008000000001, 100000005484500000001, 10000000004640000000001, 1000000001102011000000001, 100000000000131000000000001, 10000000000003830000000000001 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`Conjecture: No term is zero.`
	EXAMPLE	`a(4) = 1003001 == 1 mod 4.`
	CROSSREFS	`Cf. A113576.` `Adjacent sequences: A113572 A113573 A113574 this_sequence A113576 A113577 A113578` `Sequence in context: A072383 A035325 A028989 this_sequence A111012 A055693 A106299`
	KEYWORD	`base,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 11 10:28 EDT 2008. Contains 139662 sequences.

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