A collection of easily stated conjectures which are still open. Each conjecture is stated along with a collection of references.
Some tips for solving problems in number theory, collected by the Cardiff University group.
Unsolved problems in Number Theory. English and Japanese text by Hisanori Mishima.
A collection of research problems.
By Clark Kimberling. Offers prizes for solutions of some problems in number 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.
Some questions compiled by Jon Perry.
Regarding equal sums of like powers, compiled by Chen Shuwen.
Science /
Math /
Research /
Open_Problems
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