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 2011-11-10, 15:04 #1 R. Gerbicz     "Robert Gerbicz" Oct 2005 Hungary 22×367 Posts Happy 11/11/11 ! Somewhat really interesting day coming tomorrow we could see on the clock: (20)11.11.11. 11:11:11 http://www.guardian.co.uk/science/20...friday-morning
2011-11-10, 15:22   #2
davieddy

"Lucan"
Dec 2006
England

145128 Posts

Quote:
 Originally Posted by R. Gerbicz Somewhat really interesting day coming tomorrow we could see on the clock: (20)11.11.11. 11:11:11 http://www.guardian.co.uk/science/20...friday-morning
Seems like a special case of a palindrome to me.

Is it prime?

All I know is that FIFA has decreed that our football
teams can't display a poppy on their shirts, and world
peace is unlikely to break out shortly.

 2011-11-10, 23:34 #3 ckdo     Dec 2007 Cleves, Germany 2×5×53 Posts Happy Skyrim day, everyone!
2011-11-10, 23:48   #4
gd_barnes

May 2007
Kansas; USA

3·3,457 Posts

Quote:
 Originally Posted by davieddy Is it prime? DavaD
No, although if you truncate some digits, you get 4 primes:

11 = prime
111 = 3 * 37
1111 = 11 * 101
11111 = 41 * 271
111111 = 3 * 7 * 11 * 13 * 37
1111111 = 239 * 4649
11111111 = 11 * 73 * 101 * 137
111111111 = 3^2 * 37 * 333667
1111111111 = 11 * 41 * 271 * 9091
11111111111 = 21649 * 513239
111111111111 = 3 * 7 * 11 * 13 * 37 * 101 * 9901
2 = prime
20 = 2^2 * 5
201 = 3 * 67
2011 = prime
20111 = 7 * 13^2 * 17
201111 = 3 * 43 * 1559
2011111 = prime
20111111 = 643 * 31277
201111111 = 3^2 * 149 * 149971
2011111111 = 29 * 59 * 919 * 1279
20111111111 = 7^3 * 13 * 4510229
201111111111 = 3 * 229 * 292738153
2011111111111 = 24223 * 83024857
20111111111111 = 281 * 1283 * 55783157

Last fiddled with by gd_barnes on 2011-11-10 at 23:50

 2011-11-11, 00:20 #5 Uncwilly 6809 > 6502     """"""""""""""""""" Aug 2003 101×103 Posts 7·372 Posts Finally, a date that the Europeans, the Japanese, and them Yanks can all agree upon.
2011-11-11, 01:38   #6
bcp19

Oct 2011

7×97 Posts

Quote:
 Originally Posted by Uncwilly Finally, a date that the Europeans, the Japanese, and them Yanks can all agree upon.
But sadly, not the military (11 Nov 2011)

2011-11-11, 02:17   #7
Uncwilly
6809 > 6502

"""""""""""""""""""
Aug 2003
101×103 Posts

7·372 Posts

Quote:
 Originally Posted by bcp19 But sadly, not the military (11 Nov 2011)
How about: 65361.9 or 65327.1 or 11111.11?

 2011-11-11, 14:31 #8 petrw1 1976 Toyota Corona years forever!     "Wayne" Nov 2006 Saskatchewan, Canada 110368 Posts I have this on my results page: Code: Hand_In_The_Box 58056107 NF-PM1 2011-11-11 11:11 20.4 B1=690000, B2=20182500 5.3843
 2011-11-11, 17:11 #9 petrw1 1976 Toyota Corona years forever!     "Wayne" Nov 2006 Saskatchewan, Canada 2·3·773 Posts 11:11:11 attempt ... No seconds... Last fiddled with by petrw1 on 2011-11-11 at 17:11
2011-11-11, 21:18   #10
science_man_88

"Forget I exist"
Jul 2009
Dumbassville

838410 Posts

Quote:
 Originally Posted by R. Gerbicz Somewhat really interesting day coming tomorrow we could see on the clock: (20)11.11.11. 11:11:11 http://www.guardian.co.uk/science/20...friday-morning
next one is 12/12/12 then it won't happen again until January 1st 2101. it happens 12 times a century it just crams all into the first 12 years.

 2011-11-11, 21:32 #11 Flatlander I quite division it     "Chris" Feb 2005 England 31×67 Posts What about Captain Slog and his stardate? I remember contemplating 7/7/77 and one of Fergie's daughters was born 8/8/88 at 8:18 iirc. Last fiddled with by Flatlander on 2011-11-11 at 21:33

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