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The Positive Integers - http://www.positiveintegers.org/
Information about the positive integers, with counts of some number-theoretic functions, maintained by Saqib Kadri. |
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Extended Counts of Twin Primes - http://www.trnicely.net/twins/tabpi2.html
By Thomas Nicely. Counts in decades up to 10^12 then in steps of 10^12 up to 3.10^15, giving 3,310,517,800,844 pairs. |
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Number Field Tables - ftp://megrez.math.u-bordeaux.fr/pub/numberfields
FTP site at the University of Bordeaux. Fields of degree up to 7. |
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Tables and Computations - http://www.math.utexas.edu/users/tornaria/cnt/
Browsable interfaces to tables and computations on elliptic curves, quadratic forms, and modular forms. |
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Tables of Number Fields - http://igd.univ-lyon1.fr/~roblot/tables.html
Hilbert class field of totally real fields of degree 2, 3 and 4; Totally real fields with small root discriminant; Totally real quintic dihedral fields. By Xavier-François Roblot. |