id:A092675 - OEIS Search Results

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Primes of the form 80*R_n + 1, where R_n is the repunit (A002275) of length n.

+0
2

881, 8888888888888888881, 8888888888888888888888888888888888888888888888888888888888888888888888888888881 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`Primes of the form 888...881.` `The number of 8's in each term is given by the corresponding term of A056664 and so the first term too large to include above is 888...8881 (with 138 8's).`
	CROSSREFS	`Cf. A056664 (corresponding n).` `Cf. A051200, A004022, A093176, A093177, A089346, A093174, A092571.` `Sequence in context: A006052 A105976 A137064 this_sequence A135127 A035758 A107554` `Adjacent sequences: A092672 A092673 A092674 this_sequence A092676 A092677 A092678`
	KEYWORD	`bref,nonn`
	AUTHOR	`Rick L. Shepherd (rshepherd2(AT)hotmail.com), Mar 02 2004`

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.