Wide-Integer implements a generic C++ template for uint128_t, uint256_t, uint512_t, uint1024_t, etc.

A templated C++ library for big integers and large floating point numbers.

C++ header for arbitrary-precision integer representation.

C library implementing disk-based multi-precision arithmetic for gigantic numbers too large to be fit in system memory

Library for symbolic computation in C++11

A high performance big number for c++

Сustom data type for arbitrary-precision arithmetic