The number $e = 2.718281828...$ is the base of the natural logarithm. Its decimal representation is infinitely long.
Why does this mathematical constant contain an infinite number? What is the reason behind this?
added for clearance: it contains infinitely long numbers, which does not repeat itself, how is this proven? it should at some point has some repeated numbers.
can it be represented by a fraction? ex: 1/2?