(Ukraine) Tavrical National University (Popularity: )

Department of Algebra and Number Theory. Members, research interests, publications.

(Hungary) Alfréd Rényi Institute of Mathematics, Hungarian Academy of Sciences (Popularity: )

Number Theory research group staff.

(USA) New York Joint Number Theory Seminar (Popularity: )

Rotates between Columbia University, CUNY Graduate Center and NYU.

(Germany) University of Heidelberg (Popularity: )

Algorithmic Algebra and Number Theory. Members, research, activities, software, links.

(Hungary) Lajos Kossuth University, Debrecen (Popularity: )

Department of Algebra and Number Theory. Staff list.

(Netherlands) CWI, Amsterdam (Popularity: )

Computational number theory group. Members, research interests, publications.

(Saudi Arabia) King Fahd University (Popularity: )

Algebra and Number Theory Group. Members.

(Slovakia) Comenius University, Bratislava (Popularity: )

Department of Algebra and Number Theory. Research topics, contact information.

(USA) Penn State (Popularity: )

Algebra and number theory group. Members, seminars, preprints, links.

(Spain) Seminari de Teoria de Nombres de Barcelona (UPC) (Popularity: )

Members, research topics, publications, schedules.

(USA) University of California, Santa Cruz (Popularity: )

Number Theory Seminar meetings.

(Italy) University of Pisa (Popularity: )

Number Theory Group. Research interests and members.

(UK) University of Glasgow (Popularity: )

Number Theory and Combinatorics. Staff, research interests.

(USA) University of Wisconsin, Madison (Popularity: )

Algebra, Combinatorics and Number Theory Group. Members, seminars.

(Japan) Okayama University (Popularity: )

Number Theory Group. Members.

(Hungary) Eötvös University, Budapest (Popularity: )

Department of Algebra and Number Theory. Members pages.

(Netherlands) University of Leiden (Popularity: )

Number theory research group. Staff, events, links.

(Lithuania) Vilnius University (Popularity: )

Department of Probability Theory and Number Theory.