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Top : Science : Math : Number_Theory : Open_Problems
  		• ABC Conjecture
  		• Catalan Conjecture
  		• Collatz Problem
  		• Goldbach Conjecture
  		• Lychrel Numbers
  		• Riemann Hypothesis@
    See Also:
    Sites:
  		• Advice to Research Students: Some tips for solving problems in number theory, collected by the Cardiff University group.
  		• L-functions and Random Matrix Theory: Conjectures and open problems concerning L-functions, focussing on the areas in which there has been recent progress using results from Random Matrix Theory. Maintained at AIM.
  		• Mathematician's Secret Room: Unsolved problems in Number Theory. English and Japanese text by Hisanori Mishima.
  		• Number Theory Conjectures: A collection of easily stated conjectures which are still open. Each conjecture is stated along with a collection of references.
  		• Open Problems: Some questions compiled by Jon Perry.
  		• Seva Lev's Problem Page: A collection of research problems.
  		• Unsolved Problems and Conjectures: Regarding equal sums of like powers, compiled by Chen Shuwen.
  		• Unsolved Problems and Rewards: By Clark Kimberling. Offers prizes for solutions of some problems in number theory.
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