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Princeton's Prime Problem (Posted on 2002-11-18) Difficulty: 3 of 5
Prove that every prime number other than 2, can be expressed as a difference of two squares.

- Princeton Math Club Website

See The Solution Submitted by Raveen    
Rating: 3.7273 (11 votes)

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re: Isnt this true for any odd number? Comment 9 of 9 |
(In reply to Isnt this true for any odd number? by Vishal Gupta)

Yes, it looks like the word "prime", rather than "odd" was used as a red herring, to prevent the proof from being too obvious.
  Posted by Charlie on 2010-09-14 15:41:31

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