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A154573 a(n) is the first term in a chain of at least n consecutive numbers each with exactly 8 distinct prime factors. 4
9699690, 65893166030, 10042712381260 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

For exactly 9 distinct prime factors, a(1) = 223092870 and a(2) = 5702759516090.

LINKS

Table of n, a(n) for n=1..3.

CROSSREFS

Cf. A087977, A087978, A138206, A138207.

Sequence in context: A258363 A147575 A046326 * A058332 A058328 A242806

Adjacent sequences:  A154570 A154571 A154572 * A154574 A154575 A154576

KEYWORD

bref,nonn

AUTHOR

Donovan Johnson, Jan 15 2009

STATUS

approved

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Last modified January 19 19:49 EST 2019. Contains 319309 sequences. (Running on oeis4.)