A046445 Smallest composite with n prime factors that are distinct in length.

1, 22, 2222, 2241998, 22435673986, 2243634705621958, 2243641436526074865874, 22436456994448042654162451606, 2243645856500003226552543739737161242, 2243645872205524222052566325604967420160128694

Offset

0,2

Links

Table of n, a(n) for n=0..9.

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

Adjacent sequences: A046442 A046443 A046444 * A046446 A046447 A046448

Keyword

nonn,base

Author

Patrick De Geest, Jul 15 1998

Extensions

Corrected by Jayanta Basu, Jun 24 2013

Status

approved