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A046416 Repunit of length a(n) has exactly 5 prime factors (counted with multiplicity). 2
6, 25, 29, 62, 89, 134, 137, 142, 151, 179, 239, 257, 271, 277, 289 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
Eric Weisstein's World of Mathematics, Repunit
CROSSREFS
Sequence in context: A074096 A126016 A237286 * A042879 A042495 A018198
KEYWORD
nonn,base,more
AUTHOR
Patrick De Geest, Jul 15 1998
EXTENSIONS
More terms from Robert Gerbicz, Nov 22 2010
a(14) by Bo Gyu Jeong, Jun 30 2012
a(15) from Ray Chandler, Apr 23 2017
STATUS
approved

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Last modified February 21 10:36 EST 2024. Contains 370228 sequences. (Running on oeis4.)