Number Theory
From Alta Vista:

AMS preprints
in Number Theory

Algebraic
Number Theory Archives
Preprint archives for papers in Algebraic Number Theory and Arithmetic
Geometry

Algebraic
Number Theory Archives (UK mirror)

Analytic
Number Theory
Lecture Notes by Noam Elkies

Archives
of Number Theory List
Archives of postings by number theorists and number theory enthusiasts
to the Number Theory mailing list

Arithmetic
Algebraic Geometry
A European network of 12 working groups from 5 countries

Binary
Cubic Forms and Cubic Number Fields
an activated text by Henri Cohen

Cyclotomic Fields Virtual
Study Group
A group of people studying L. Washington : `Introduction to cyclotomic
fields', Graduate Texts in Mathematics 83, Springer Verlag.

Galois fields
Tables and software for calculations with finite fields and polynomials
over them.

Introduction
to Number Theory
Introduction to Number Theory

Ktheory Preprint Archives
Electronic preprint archives for mathematics research papers in Ktheory.

Lecture notes by
John Cosgrave
courses in Number Theory at St Patrick's College Dublin

Lehmer's Conjecture
That the Mahler measure of an algebraic is bounded away from 1

MAA books on Numbers
and Number Theory

Math Front: NT Number
Theory
Front page for the number theory section of the arxiv (was Los Alamos)
preprint server

MathPages: Number
Theory
Kevin Brown's collection of sci.math postings related to number theory
topics

NFSNET
A project to factor numbers with the Number Field Sieve.

Number
Field Database
Information about algebraic number fields of degrees 1 up to about
16, predominantly about fields not too far from the minimal absolute discriminants
per signature.

Number
Theory Foundation
Aims to collect donations from supporters of number theory and to disburse
these donations to encourage research.

Number Theory Web
Things of interest to number theorists collected by Keith Matthews

Number Theory Web
(American site)
American mirror of the Number Theory Web

Number Theory
Web (UK site)
UK mirror of the Number Theory Web

Number
theory
Dave Rusin's guide to number theory.

OnLine
Encyclopedia of Integer Sequences
Given an integer sequence, find its name, formula, etcetera

Paul Garrett: Crypto
and Number Theory
Lecture notes for a course on cryptography and number theory.

Perfectly Scientific Inc
PSI offers software, documents, books on the subjects of: compression,
wavelets, FFT, general transforms, color graphics, Monte Carlo, fractals,
convolution,signal processing, matrix algebra, genetic algorithms, number
theory as used in factoring, cryptography

Reciprocity
Laws
Franz Lemmermeyer's online book on reciprocity laws, with bibliography
and proofs of quadatric reciprocity.

Riemann's
paper
Ueber die Anzahl der Primzahlen unter einer gegebenen Grösse,
and in translation.

SECANTS
South of England Computational and Algorithmic Number Theory Seminars

Software and other
links
In the Number Theory Web

Tables of Bernoulli
computations
Irregular primes and relative class numbers

Tables of Number
Fields with Prescribed Ramification
Number fields of degree up to seven ramified at only a few small primes

The
3x + 1 Problem and its Generalizations
A survey article by Jeff Lagarias on the Collatz Problem.

The 3x+1 problem search
results
Maximum number tested (N): 77·2^50 = 86694292826882048.

The
Arithmetic Properties of Binomial Coefficients
an activated text by Andrew Granville

The Cunningham
Project
aims to factor the numbers b^n + 1 for b = 2, 3, 5, 6, 7, 10, 11,
12

The Riemann Hypothesis
Papers and other links related to RH

The
work of Robert Langlands
From Yahoo:

Around the Goedel's Theorem
 Platonism, intuition and the nature of mathematics. Axiomatic set theory.
Incompleteness theorems and related results; methodological consequences.

Binary, Primes,
and Factors  binary representation of numbers for use in number theory
for primes and factoring.

Concealed
Paradoxes in Mathematics and Physics

FactorWorld
 dedicated to algorithms and computational results on integer factorization.

Millennial Conference
on Number Theory  May 2126, 2000; University of Illinois at UrbanaChampaign.

NTL  portable C++ library for problems
in algebra and number theory.

Number Theory [seanet.com]

Number Theory Web
 This contains items of interest to Number Theorists

Number Theory Web Site
 relative congruence.

Recreational Topics from
the Theory of Numbers