In ECMAScript, Infinity is classified as a primitive value.
Infinity is a numeric value that represents positive infinity.
It is displayed, or printed out, when a very large positive number exceeds
the upper limit of the floating point numbers type which is 1.7976931348623157E+10308.
-Infinity is a numeric value that represents negative infinity.
It is displayed, or printed out, when a very large negative number exceeds
the lower limit of the floating point numbers type which is -1.7976931348623157E+10308.
Also see number.NEGATIVE_INFINITY
BigPosNum = 1.5E+339 * 2.4E+317
document.write("BigPosNum = " + BigPosNum)
BigNum = Infinity
BigNegNum = -1.5E+333
document.write("BigNegNum = " + BigNegNum)
BigNegNum = -Infinity