Die Einsamkeit der Primzahlen

The characters' solitude feels so palpable—did the author draw from personal experience or fictional imagination to craft this depth?

The way the narrative weaves between the characters' perspectives added to the sense of disconnection. Was this intentional to reflect their emotional states?

The setting adds a layer of richness and authenticity—I'm curious whether the author's background influenced this choice or if it was purely narrative.