[Boost-users] Possibility to increase boost/multiprecision/mpfr precision.

Hello, is it possible to make boost/multiprecision/mpfr work with more than 4294967 decimal digits of precision. I understand that it comes from the unsigned type, but is it possible to adapt it to uint64_t for example? I'm experimenting with headers, but since I've been using multiprecision for a relatively short time, I don't fully understand how the wrapper works and where the dependencies are. I apologize if the question sounds silly, I'm c++ enthusiast. Best regards, Ivo