A077331 Smallest number beginning with 6 and having exactly n distinct prime divisors.

61, 6, 60, 630, 6006, 60060, 690690, 60090030, 601380780, 6469693230, 600319429710, 60007743265470, 600277546959090, 60039293728424010, 614889782588491410, 60865792091025932010, 6000526229622444289770, 600025752738409899231330

Offset

1,1

Links

Table of n, a(n) for n=1..18.

Example

a(3) = 60 = 2^2*3*5.

Crossrefs

Cf. A077326, A077327, A077328, A077329, A077330, A077332, A077333, A077334.

Cf. A106411-A106419, A106421-A106429.

Sequence in context: A198189 A102600 A316918 * A106426 A106416 A224730

Adjacent sequences: A077328 A077329 A077330 * A077332 A077333 A077334

Keyword

base,nonn

Author

Amarnath Murthy, Nov 04 2002

Extensions

Corrected and extended by Sam Handler (sam_5_5_5_0(AT)yahoo.com), Jul 21 2004

a(8)-a(10) from Ray Chandler, Apr 17 2005

More terms from Ray Chandler, May 02 2005

Status

approved