The Only Even Prime Number 2

"akashete lakkha tara, chand kintu ekta re..." are you something like that Mr. TWO? There are numerous (to the infinity of course) prime numbers. And so far you can see, its the only even number in the set? And maybe that's what makes it so important! Let's try an example: On the first day of my sister's kindergarten the two other students I noticed so sudden after entering the class, who were actually in pair... I mean, they were twins! So this time the best "1" has been defeated being so common and what's 2, became more like noticing.