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Revision History for A066963

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Start of a record-breaking run of consecutive composite integers with an odd number of prime factors.
(history; published version)

#7 by Wesley Ivan Hurt at Sun Apr 10 14:16:51 EDT 2022

STATUS

editing

approved

#6 by Wesley Ivan Hurt at Sun Apr 10 14:16:35 EDT 2022

COMMENTS

a(23) > 10^12. [From __Donovan Johnson_, Oct 11 2010]

EXAMPLE

a(3)=170 because this is the start of third record breaking run of consecutive composite integers (170,171,172) with an odd number of prime factors ( 170=2*5*17, 171=3*3*19, 172=2*2*43).

STATUS

approved

editing

#5 by Charles R Greathouse IV at Wed Oct 02 15:47:15 EDT 2013

AUTHOR

_Shyam Sunder Gupta (guptass(AT)rediffmail.com), _, Jan 27 2002

Discussion

Wed Oct 02

15:47

OEIS Server: https://oeis.org/edit/global/1962

#4 by Russ Cox at Fri Mar 30 17:34:49 EDT 2012

COMMENTS

a(23) > 10^12. [From _Donovan Johnson (donovan.johnson(AT)yahoo.com), _, Oct 11 2010]

EXTENSIONS

a(18)-a(21) from _Donovan Johnson (donovan.johnson(AT)yahoo.com), _, Sep 09 2008

a(22) from _Donovan Johnson (donovan.johnson(AT)yahoo.com), _, Oct 11 2010

Discussion

Fri Mar 30

17:34

OEIS Server: https://oeis.org/edit/global/163

#3 by N. J. A. Sloane at Wed Oct 20 03:00:00 EDT 2010

DATA

8, 27, 170, 242, 2522, 5882, 18238, 48513, 61532, 506517, 752714, 1213848, 3098613, 5481504, 78214964, 103886546, 118689518, 1556468478, 1608906624, 3939877246, 7964728742, 166384601987, 250060982098

COMMENTS

a(23) > 10^12. [From Donovan Johnson (donovan.johnson(AT)yahoo.com), Oct 11 2010]

EXTENSIONS

a(22) from Donovan Johnson (donovan.johnson(AT)yahoo.com), Oct 11 2010

#2 by N. J. A. Sloane at Fri Jan 09 03:00:00 EST 2009

DATA

8, 27, 170, 242, 2522, 5882, 18238, 48513, 61532, 506517, 752714, 1213848, 3098613, 5481504, 78214964, 103886546, 118689518, 1556468478, 1608906624, 3939877246, 7964728742

KEYWORD

more,nonn,new

EXTENSIONS

a(18)-a(21) from Donovan Johnson (donovan.johnson(AT)yahoo.com), Sep 09 2008

#1 by N. J. A. Sloane at Fri May 16 03:00:00 EDT 2003

NAME

Start of a record-breaking run of consecutive composite integers with an odd number of prime factors.

DATA

8, 27, 170, 242, 2522, 5882, 18238, 48513, 61532, 506517, 752714, 1213848, 3098613, 5481504, 78214964, 103886546, 118689518

OFFSET

1,1

EXAMPLE

a(3)=170 because this is the start of third record breaking run of consecutive composite integers(170,171,172) with an odd number of prime factors( 170=2*5*17,171=3*3*19,172=2*2*43).

CROSSREFS

Cf. A066793, A066794.

KEYWORD

more,nonn

AUTHOR

Shyam Sunder Gupta (guptass(AT)rediffmail.com), Jan 27 2002

STATUS

approved