Constant lexical_util::format::SAGE_STRING

pub const SAGE_STRING: u128 = NumberFormatBuilder::new()
    .digit_separator(num::NonZeroU8::new(b'_'))
    .internal_digit_separator(true)
    .build(); // 202_824_096_038_269_144_926_504_985_034_764u128

Number format to parse a Sage float from string.