JSFiddle - React, Tailwind, and code Playground

JavaScript

Math.valueOfSeed = function(n)
    {
        return Number(new Date(n%9999, n%12, n%30, n%24, n%60, n%60, n%1000));
    };

alert(Math.valueOfSeed(1) + " = " + Math.valueOfSeed(1));
alert(Math.valueOfSeed(2) + " = " + Math.valueOfSeed(2));
alert(Math.valueOfSeed(15) + " = " + Math.valueOfSeed(15));
alert(Math.valueOfSeed(5555) + " = " + Math.valueOfSeed(5555));
alert(Math.valueOfSeed(21212121) + " = " + Math.valueOfSeed(21212121));
alert(Math.valueOfSeed(6554654654) + " = " + Math.valueOfSeed(6554654654));