Perfect numbers: Revision history

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2 August 2009

26 June 2009

24 June 2009

19 June 2009

15 June 2009

10 June 2009

9 June 2009

5 June 2009

29 May 2009

26 May 2009

23 May 2009

5 May 2009

3 May 2009

2 May 2009

5 April 2009

28 March 2009

14 March 2009

3 February 2009

22 December 2008

11 December 2008

4 December 2008

3 December 2008

2 December 2008

19 October 2008

28 September 2008

27 September 2008

24 August 2008

23 August 2008

22 August 2008

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