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  • #Redirect [[Perfect number]]
    28 bytes (3 words) - 21:44, 2 April 2008
  • ...roper divisors of 6 are 1, 2, and 3, and 1+2+3=6. In contrast, 4 is not a perfect number, as the proper divisors of 4 are 1 and 2, and <math> \scriptstyle 1+2 \neq The origin of the term "perfect number" appears to be unknown. Ancient Greeks probably ascribed mystical properti
    4 KB (677 words) - 19:07, 7 November 2008
  • ...is a [[Mersenne prime]] number is perfect. A short proof that every even perfect number must have this form can be given using elementary number theory. Let <math>n</math> be an even perfect number, and write <math>n = 2^{r} b</math> where <math>n>0</math> and <math>b</mat
    2 KB (397 words) - 12:24, 14 May 2008
  • 107 bytes (15 words) - 20:58, 28 June 2008
  • 180 bytes (24 words) - 16:04, 2 December 2008
  • 12 bytes (1 word) - 20:15, 2 April 2008
  • * [[Multiply perfect number]]
    255 bytes (24 words) - 21:27, 2 April 2008

Page text matches

  • * [[Multiply perfect number]]
    255 bytes (24 words) - 21:27, 2 April 2008
  • #Redirect [[Perfect number]]
    28 bytes (3 words) - 21:44, 2 April 2008
  • ...is a [[Mersenne prime]] number is perfect. A short proof that every even perfect number must have this form can be given using elementary number theory. Let <math>n</math> be an even perfect number, and write <math>n = 2^{r} b</math> where <math>n>0</math> and <math>b</mat
    2 KB (397 words) - 12:24, 14 May 2008
  • ...roper divisors of 6 are 1, 2, and 3, and 1+2+3=6. In contrast, 4 is not a perfect number, as the proper divisors of 4 are 1 and 2, and <math> \scriptstyle 1+2 \neq The origin of the term "perfect number" appears to be unknown. Ancient Greeks probably ascribed mystical properti
    4 KB (677 words) - 19:07, 7 November 2008
  • A ''[[perfect number]]'' is defined as one equal to the sum of its "aliquot divisors", that is a
    1 KB (172 words) - 04:53, 1 November 2013
  • Every even [[perfect number]] is a ''triangular number''
    884 bytes (130 words) - 07:45, 24 January 2009
  • {{r|Perfect number}}
    927 bytes (119 words) - 16:24, 11 January 2010
  • {{r|Perfect number}}
    553 bytes (71 words) - 20:41, 11 January 2010
  • A number is called [[perfect number|perfect]] if it is equal to the sum of its divisors:
    16 KB (2,562 words) - 00:45, 13 October 2009
  • ...ains many remarkable subsets : [[prime number]]s, [[Fibonacci number]]s, [[perfect number]]s, [[catalan number]]s, etc.
    11 KB (1,701 words) - 20:07, 1 July 2021
  • ...- 1</math> (called Mersenne primes). These primes arise in the study of [[perfect number]]s, and factors of numbers of the form <math>2^n - 1</math> (sometimes call
    14 KB (2,281 words) - 12:20, 13 September 2013
  • ...er, then the product of that prime number and the previous power of 2 is a perfect number.
    8 KB (1,314 words) - 11:25, 13 January 2020
  • ...journal ''Mathematical Diary'', in which he proved that there is no odd [[perfect number]] (a positive integer that is equal to the sum of its proper divisors, such
    8 KB (1,209 words) - 08:09, 28 September 2013
  • ...ng a slow Jimmy Reed song called 'The Moon Is Rising'. The group found the perfect number penned for them by Johnnie Dee, former lead singer of the Bulldogs. Dee tra
    21 KB (3,448 words) - 15:23, 8 April 2023
  • ...d Hess state that couples "just need to trust God to provide them with the perfect number of children for their situation."<ref name="hess">{{cite book | title=A Ful
    42 KB (6,326 words) - 07:31, 26 March 2024
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