https://mail.python.org/archives/list/python-dev@python.org/thread/YSHZ2SR7D5QUCFNCDXJBKF7UFSJ5UNWM/
Mailman 3 30-bit PyLong digits in 3.1? - Python-Dev - python.org
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https://mail.python.org/archives/list/docs@python.org/thread/FWCETPYA26Z3CC52MXBZOMYM6R4YRHB7/
Mailman 3 [issue29751] PyLong_FromString documentation wrong on numbers with leading zero and...