ref: 4aa0e6c6b8a1a23b144b0382d6156aaa55b2c7fd dir: /lib/json/test/inputs/y_number_huge_exp.json/
[0.4e00669999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999969999999006]