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

Simple Long Integer Math for C++

A C++ library for big integers and dynamic precision floating-point

BeeNum is an arbitrary-precision arithmetic library.

long arithmetic library

A library that helps the user to perform all arithematic operations on big integers having up to 1000 digits.

Simple RSA key generation and encryption library for C++

大整数运算库 C语言

A single-file C++ library for arithmetics with arbitrary length numbers

C library for arbitrary-precision arithmetic

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

c# big integer implementation on C++ (portable format desired)

C# BigInteger implementation on Python

C# BigInteger spec ports to other languages

An implementation of big integer library in C++

RSA encryption calculator using java

Длинная арифметика на языке C++20 с подробным описанием алгоритмов

Arbitrary precision arithmetic

Portable big integer library.

To compute basic mathematical calculation like addition, subtraction, etc. on large digit number using c++