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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 (list; graph; refs; listen; history; internal format)
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), 27-29.

LINKS

S. S. Gupta, Smith Numbers.

EXAMPLE

a(3)=636 because 636 is the smallest Smith number with 4 prime factors.

CROSSREFS

Cf. A006753, A104169.

Sequence in context: A120093 A197987 A133018 * A197990 A068327 A066842

Adjacent sequences:  A104165 A104166 A104167 * A104169 A104170 A104171

KEYWORD

nonn

AUTHOR

Shyam Sunder Gupta (guptass(AT)rediffmail.com), Mar 10 2005 and May 03 2005

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Last modified February 17 04:58 EST 2012. Contains 205985 sequences.