

A104168


Smallest Smith number with n prime factors.


1



4, 27, 636, 378, 729, 648, 576, 2688, 17496, 44928, 75776, 168960, 765952, 319488, 958464, 5537792, 5963776, 2883584, 5767168, 7077888, 279969792, 544997376, 778567680, 2579496960, 4567597056, 3875536896, 22749904896, 60699967488, 87509958656, 164886478848
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OFFSET

2,1


COMMENTS

Maximum number of prime factors of a Smith number below 10^9 is 24.


REFERENCES

S. S. Gupta, Smith Numbers, Mathematical Spectrum, 37 (2004/5), 2729.


LINKS

Table of n, a(n) for n=2..31.
S. S. Gupta, Smith Numbers.


EXAMPLE

a(4) = 636 because 636 is the smallest Smith number with 4 prime factors.


CROSSREFS

Cf. A006753, A104169.
Sequence in context: A197987 A133018 A210343 * A197990 A068327 A066842
Adjacent sequences: A104165 A104166 A104167 * A104169 A104170 A104171


KEYWORD

nonn


AUTHOR

Shyam Sunder Gupta, Mar 10 2005 and May 03 2005


EXTENSIONS

a(28)a(31) from Donovan Johnson, Jan 02 2013


STATUS

approved



