Mattia, Alice will have parallèlles course in their childhood. But their paths eventually cross at the time of adolescence: "The years of high school had formed a deep wound that Mattia and Alice had deemed it too deep to heal They had crossed snorkeling, denying her the world. and she, feeling rejected by the world, and they had realized that this was not much difference They had built a lopsided and asymmetrical friendship, composed of long absences and great silences .... ". And indeed, their paths never cease to separate and come together, continuing a teenager who goes on and ended ... Beautiful book on adolescence, the need to mark the changing body to better assert the possession, The Solitude of Prime Numbers knows very well make it as the feeling of suffocation and difficulty in entering the world of the adultes.Si a hero takes refuge in the world of math, the other stands behind the viewfinder of a camera to better hold the world at bay. Nothing is more dangerous than writing on this passage of life and Paolo Giordano is doing wonderfully, giving us a novel both fresh and poetic, without erasing the black so far aspects of these finds as if héros.On yet we were there the class leaders, those who set the tone and are surrounded by a "court" servile, and excluded, voluntary or not, who sometimes suffer without flinching the most cruel insults. A beautiful novel.