143 (number)

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143 is the natural number following 142 and preceding 144.

143
Cardinal one hundred [and] forty-three
Ordinal 143rd
(one hundred [and] forty-third)
Factorization 11 \cdot 13
Divisors 1, 11, 13, 143
Roman numeral CXLIII
Binary 100011112
Octal 2178
Duodecimal BB12
Hexadecimal 8F16

Contents

[edit] In mathematics

143 is the sum of three consecutive primes (43 + 47 + 53), as well as the sum of seven consecutive primes (11 + 13 + 17 + 19 + 23 + 29 + 31). But this number is never the sum of an integer and its base 10 digits, making it a self number.

Every positive integer is the sum of at most 143 seventh powers (see Waring's problem).

143 is the difference in the first exception to the pattern shown below:

3^2+4^2=5^2
3^3+4^3+5^3=6^3
3^4+4^4+5^4+6^4=7^4-143

[edit] In the military

[edit] In transportation

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143 is also:

[edit] See also

[edit] External links

[edit] References

  1. ^ Hattikutur, Mangkesh. "15 reasons Mr. Rogers was best neighbor ever." http://www.cnn.com/2008/LIVING/wayoflife/07/28/mf.mrrogers.neighbor/ Mental Floss/CNN. 28 Jul 2008.
  2. ^ Nan Cross: Supported men resisting apartheid conscription Sunday Times (South Africa), 2007-07-22, accessed 2009-01-05.
  3. ^ http://www.cnn.com/2003/EDUCATION/11/14/wheaton.dance.ap/index.html Archived May 11, 2008 at the Wayback Machine
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