fastconv quickly converts huge integers between different bases. It splits up the integers into smaller chunks, processes the chunks individually, and recombines the results. Even without parallelization, this results in a massive speed improvement over iterated divisions of the original integer, but fastconv also processes the chunks in parallel for even faster conversions.

number_to_digits.py converts an integer (stored as a big-endian binary integer or a Python int) to a sequence of base-b digits. Run ./number_to_digits.py for usage information.

digits_to_number.py converts a sequence of base-b digits to an integer (stored as a big-endian binary integer or a Python int). Run ./digits_to_number.py for usage information.

• Python ≥ 3.7

fastconv is licensed under version 3 or later of the GNU Affero General Public License. See LICENSE.