At Status we require that for cryptographic work and we are developing and supporting the following:
* nim-ttmath: [https://github.com/status-im/nim-ttmath](https://github.com/status-im/nim-ttmath). This wraps the [ttmath C++ bignum library](https://www.ttmath.org/). This requires the [following patches](https://github.com/nim-lang/Nim/pull/7333) to `static[int]`. * Mpint: [https://github.com/status-im/mpint](https://github.com/status-im/mpint). WIP, don't use it. You can also check my own number theory repo: [https://github.com/numforge/number-theory](https://github.com/numforge/number-theory) which is just a reorganization of code I've used for Project Euler ([my repo here](https://github.com/mratsim/nim-projecteuler)). Of note it will provide a template that replace all operations in a scope by modulo operation: import number_theory modulo(42): let x = 10 + 50 let y = x ^ 10 echo y Currently it does not work though, you get stack overflow because the +/-/mul/div within addmod, submod, etc are also replaced ... Edit @lsrcd: Python is probably using libmpdec too: [http://www.bytereef.org/mpdecimal](http://www.bytereef.org/mpdecimal)/
