- Expanding the Margin, a number theory blog

- Number-Theoretic Methods in Cryptology 2021 (NuTMiC 2021), June 14-16, 2021, Faculty of Mathematics and Computer Science of Adam Mickiewicz University, Poznań, Poland

- Quantum chaos and number theory, a conference in honor of Zeev Rudnick's 60 birthday, May 23-27, 2021, The Steinhardt Museum of Natural History, Tel Aviv University, Israel

- Chicago Number Theory Day 2020, an online number theory conference, Saturday, June 20, 2020 via Zoom

- Leuca2021, Celebrating Claude Levesque's and Michel Waldschmidt's 75th birthdays, May 10-14, 2021, Marina di San Gregorio, Patù (Lecce), Italy

- Vernon Armitage (1932-2019) LMS obituaries, p. 46, May 2020
- Richard Kenneth Guy (1912-2020) LMS obituaries, p. 48, May 2020

- Memories of Goro Shimura, AMS Notices, May 2020

- Travels With John Conway, in 258 Septillion Dimensions, Siobhan Roberts, New York Times, May 16, 2020

- Nordic Number theory Network Days XII, May 28-29, 2020, DTU Copenhagen, has been changed to an online meeting

- ELAZ 2021 (postponed version of ELAZ 2020) August 23-27, 2021, Adam Mickiewicz University, Poznań, Poland

- Videos from BIRS Workshop 20w2254, Alberta Number Theory Days XII (Online), May 2-3, 2020, Banff

- Number Theory Online Conference (NTOC2020), June 3-5, 2020, CARMA (University of Newcastle)

- 18.785 Number Theory I (MIT, Fall 2019) (Andrew Sutherland)
- 18.783 Elliptic Curves (MIT, Spring 2019) (Andrew Sutherland)
- Sato-Tate distributions (Lecture notes from the 2016 Arizona Winter School) (Andrew Sutherland)
- Classical Modular Polynomials (Andrew Sutherland)
- Weber modular polynomials (Andrew Sutherland)
- Slides from Oberwolfach lecture series "Sieve theory and small gaps between primes" on the Polymath8 project on prime gaps
- Partition class polynomials (Andrew Sutherland)
- Narrow admissible Tuples (related to the Polymath project on prime gaps) (Andrew Sutherland)

- Hausdorff Summer School: The Circle Method - Entering its Second Century, Hausdorff Center for Mathematics, University of Bonn, Germany is postponed to June 14-18, 2021

- John Horton Conway (1937-2020)
- Analytic and Geometric Number Theory, was 11-12 June 2020, now Tuesday 8th - Wednesday 9th September 2020
- Heilbronn Annual Conference, September 10-11, 2020, University of Bristol, UK

- 7th International Conference on Uniform Distribution Theory UDT2021, changed date: now February 22-26, 2021, Linz, Austria

*Many Variations of Mahler Measures: A Lasting Symphony*, François Brunault, Wadim Zudilin, CUP, 2020

- VaNTAGe: a virtual math seminar on open conjectures in number theory and arithmetic geometry

- Some progress on the 3x+1 problem due to Terry Tao
- Why abc is still a conjecture (Peter Scholze and Jacob Stix)
- Mathematical proof that rocked number theory will be published (Nature, April 3, 2020)

- International Master Focus on Computational Number Theory, Winter 2020/Summer 2021, University of Würzburg, Germany

- 2020 Frank Nelson Cole Prize in Number Theory (James Maynard)
- Alexander Smith wins first David Goss prize
- Jean-Pierre Wintenberger (1954-2019)

*The Distribution of Prime Numbers*, Dimitris Koukoulopoulos, Graduate Studies in Mathematics, Volume 203, 2019*Variations on a Theorem of Tate*, Stefan Patrikis, Memoirs of the American Mathematical Society, Volume 1238, 2019*Quadratic Number Theory: An Invitation to Algebraic Methods in the Higher Arithmetic*, J.L. Lehman, AMS Dolciani Mathematical Expositions, 52, 2019; Review by Fernando Q. Gouvêa*Number Theory Revealed: An Introduction*, Andrew Granville, AMS Textbook, 2019*Automorphic Forms and Related Topics*, Ed. Samuele Anni, Jay Jorgenson, Lejla Smajlović, Lynne Walling, AMS Contemporary Mathematics, Volume 732, 2019*Analytic Methods in Arithmetic Geometry*, Ed. Alina Bucur, David Zureick-Brown, AMS Contemporary Mathematics, Volume: 740, 2019*Algebraic Curves and Their Applications*, Ed. Lubjana Beshaj, Tony Shaska, AMS Contemporary Mathematics, Volume 724, 2019*The Unity of Combinatorics*, Ezra Brown, Richard Guy, The Carus Mathematical Monographs, Volume 36, 2020*Sums of Reciprocals of Fractional Parts and Multiplicative Diophantine Approximation*, Victor Beresnevich, Alan Haynes, Sanju Velani, Memoirs of the American Mathematical Society, Volume 1276, 2020*Rigid Character Groups, Lubin-Tate Theory, and (φ,Γ)-Modules*, Laurent Berger, Peter Schneider, Bingyong Xie, Memoirs of the American Mathematical Society, Volume 1275, 2020*Shimura Varieties*, Ed. Thomas Haines, Michael Harris, LMS Lecture Notes 457, 2020*Berkeley Lectures on p-adic Geometry*, Peter Scholze, Jared Weinstein, Annals of Mathematics Studies Volume 207, 2020*Galois Cohomology and Class Field Theory*, David Harari, Springer Universitext, 2020*Sequential Experiments with Primes*, Mihai Caragiu, Springer, 2017

- Interactions between group theory, number theory, combinatorics and geometry, March 16-20, 2020, Isaac Newton Institute, Cambridge, UK
**(online only)** - Algebraic K-theory, motivic cohomology and motivic homotopy theory, March 23-27, 2020, Isaac Newton Institute, Cambridge, UK,
**(online only)** - Arithmetic geometry, cycles, Hodge theory, regulators, periods and heights, March 30-April 3, 2020, Isaac Newton Institute for Mathematical Sciences, Cambridge, UK
**(online only)**

- Two-year postdoc position in number theory and arithmetic geometry at UNSW, Sydney, Australia
- Olga Taussky-Todd, Notices AMS Volume 67, Number 3, March 2020

- Front Range Number Theory Day, April 25th, 2020, University of Colorado, Boulder, Colorado, USA

- CIMPA-CINVESTAV School "p-Adic Numbers, Ultrametric Analysis, and Applications", September 16-24, 2020, Mexico City, Mexico

- Delhi Number Theory Days, April 18-19, 2020, IIIT-Delhi, India

- The 23rd Midrasha Mathematicae: O-minimality and its applications in Diophantine Geometry and Hodge Theory, May 17-22, 2020, Israel Institute for Advanced Studies at the Hebrew University of Jerusalem, Israel

- Workshop on Galois Representations, Automorphic forms and their L-functions, April 20-23, 2020, University of Luxembourg, Luxembourg
- Integers Conference 2020, October 1-4, 2020, Augusta University, Augusta, Georgia, USA
*Class Groups of Number Fields and Related Topics*, Ed. Kalyan Chakraborty, Azizul Hoque and Prem Prakash Pandey, Springer, 2020

- Analytic and Geometric Number Theory, June 11-12, 2020, University of Bath, UK
- Bath Algebra, Geometry and Number Theory Seminar

- Thematic Program in p-adic L-functions and Eigenvarieties, May 25-29, 2020, Center for Mathematics at Notre Dame, Indiana, USA

- Harmonic Analysis and Analytic Number Theory Dual Trimester Program, May 3-August 20, 2021, Hausdorff Research Institute for Mathematics, Bonn, Germany

- Fourth Edition of Mid-Atlantic Seminar On Numbers (MASON), March 7-8, 2020, Gettysburg College, PA, USA
- Three year postdoc positioin at University of Glasgow

- Multiple Zeta Functions and Their Special Values, June15-21, 2020, Nesin Mathematics Village-Izmir-Turkey

- 20th Central European Conference on Cryptology, June 24-26, 2020, Zagreb, Croatia

- SouthEast Regional Meeting On Numbers (SERMON) 2020, April 4-5, 2020, Duke University, NC, USA

- Number Theory Workshop STNB 2020, 34th edition, February 3-7, 2020, Seminari de Teoria de Nombres de Barcelona, UB-UAB-UPC, Barcelona, Catalonia, Spain
- Arithmetic Groups and 3-Manifolds, March 23-27, 2020, University of Hagen, Germany
**(cancelled)**