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A046445 Smallest composite with n prime factors that are distinct in length. 0
1, 22, 2222, 2241998, 22435673986, 2243634705621958, 2243641436526074865874, 22436456994448042654162451606, 2243645856500003226552543739737161242, 2243645872205524222052566325604967420160128694 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
LINKS
MATHEMATICA
p = 2; Join[{1}, Table[p = p*Prime[PrimePi[10^n] + 1], {n, 9}]] (* Jayanta Basu, Jun 24 2013 *)
CROSSREFS
Cf. A003617, A033873. Initial terms of A046442, A046443, A046444.
Sequence in context: A202885 A183488 A253128 * A133235 A114449 A069221
KEYWORD
nonn,base
AUTHOR
Patrick De Geest, Jul 15 1998
EXTENSIONS
Corrected by Jayanta Basu, Jun 24 2013
STATUS
approved

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Last modified June 20 18:00 EDT 2024. Contains 373532 sequences. (Running on oeis4.)