ref: 954b2fd7a8a0a65a077b61a5932ed54d3e3ef6a5 dir: /lib/json/test/inputs/y_number_huge_exp.json/
[0.4e00669999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999969999999006]