@aureooms/js-integer-little-endian Integer numbers little endian library for JavaScript. Twin project of @aureooms/js-integer-big-endian. integer.parse( 16 , 100 , 'ff' ) ; // [ 2 , 55 ] integer.stringify( 100 , 16 , [ 2 , 55 ] ) ; // 'ff' Reference The GNU Multiple Precision Arithmetic Library https://gmplib.org/gmp-man-6.0.0a.pdf https://en.wikipedia.org/wiki/Sch%C3%B6nhage%E2%80%93Strassen_algorithm