Mazur, Barry  
   Harvard University. Number theory, automorphic forms, arithmetic algebraic geometry. Papers and work in progress.
   http://www.math.harvard.edu/~mazur/

Matthews, Keith  
   University of Queensland (emeritus). Computational problems, Diophantine equations, LLL, Collatz problem. Originator and maintainer of the Number Theory Web.
   http://www.maths.uq.edu.au/~krm/

Melfi, Giuseppe  
   University of Neuchâtel. Diophantine approximation; Modular forms; Elementary number theory; Practical numbers. Papers and thesis.
   http://www.unine.ch/statistics/melfi/

Morain, Francois  
   École Polytechnique. Computational number theory, cryptography. Papers, ECPP software.
   http://www.lix.polytechnique.fr/Labo/Francois.Morain/english-index.html

Murty, Kumar  
   University of Toronto, Canada. Publications and resources for Number Theory courses.
   http://www.math.toronto.edu/murty/

Macleod, Allan  
   University of Paisley. Computational number theory, elliptic curves, recreational number theory; High-precision computation of mathematical constants; Special function software. Publications; notes.
   http://maths.paisley.ac.uk/allanm/amclhome.htm

Meuser, Diane  
   Boston University. Number theory and Algebraic geometry. Contact information.
   http://math.bu.edu/people/dmm/

Mahler, Kurt  
   Papers in PDF or PostScript. With obituary by Alf van der Poorten.
   http://www.cecm.sfu.ca/Mahler/

Milne, J. S.  
   Number theory, arithmetic geometry.
   http://www.jmilne.org/math/

McMurdy, Ken  
   Rose-Hulman Institute of Technology. Elliptic curves. Lecture notes, preprints.
   http://www.rose-hulman.edu/~mcmurdy/

Marklof, Jens  
   University of Bristol. Quantum Chaos, Equidistribution, Modular Forms. Publications, research projects.
   http://www.maths.bris.ac.uk/~majm/

Mihailescu, Preda  
   Universität-GH Paderborn. Primality proving; Computational number theory; complex and numerical analysis. Publications, thesis, software: CYCLOPROV, a LiDIA based C++ package for primality proving.
   http://www-math.uni-paderborn.de/~preda/