A046416 - OEIS

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A046416

Repunit of length a(n) has exactly 5 prime factors (counted with multiplicity).

6, 25, 29, 62, 89, 134, 137, 142, 151, 179, 239, 257, 271 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,1`
	LINKS	`Eric Weisstein's World of Mathematics, Repunit` `P. De Geest, Repunits prime factors`
	CROSSREFS	`Cf. A000042, A004022, A046053.` `Sequence in context: A136606 A074096 A126016 * A042879 A042495 A018198` `Adjacent sequences: A046413 A046414 A046415 * A046417 A046418 A046419`
	KEYWORD	`nonn,more`
	AUTHOR	`Patrick De Geest (pdg(AT)worldofnumbers.com), Jul 15 1998.`
	EXTENSIONS	`More terms from Robert Gerbicz (robert.gerbicz(AT)gmail.com), Nov 22 2010`

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Last modified February 15 07:42 EST 2012. Contains 205717 sequences.