Dirichlet is an number theory library for .NET.

Features:

• Math and number theory operations for int, uint, long, ulong, Int128, UInt128, BigInteger, etc.
• High-performance Factorization
• Optimized Arithmetic Functions and Algorithms

Although it is fairly complete and well tested, it lacks the organization of a released library due to its evolution and the inclusion of various experimental ideas and highly-specialized applications. In the algorithms in particular there are often many flavors of same thing in various attempts to increase performance.

If there is any interest, I might separate things out and migrate more of the core to Dirichlet.Numerics.