Lists of problems in math

• List of undecidable problems

• List of unsolved problems

• List of open problems in computer science

• List of NP-complete problems

• List of PSPACE-complete problems

Millennium Prize Problems

• Hodge conjecture

• Riemann hypothesis

• Yang–Mills existence and mass gap

• Navier–Stokes existence and smoothness

• Birch and Swinnerton-Dyer conjecture

• Poincaré conjecture solved

• P versus NP problem: a

WIKIPEDIA

List of unsolved problems (conjectures or open problems) in sciences: https://en.wikipedia.org/wiki/Lists_of_unsolved_problems

Millennium Prize Problems https://en.wikipedia.org/wiki/Millennium_Prize_Problems

Hilbert's problems https://en.wikipedia.org/wiki/Hilbert%27s_problems

LINKS

List of open problems in math http://openproblemgarden.org/ and list of solved problems http://openproblemgarden.org/category/number_theory_0?q=view/solved