Before he was arrested in France for failing to adequately moderate criminal activity on his social media app, tech billionaire Pavel Durov was known for three things: founding Telegram, posting thirst-trap photos on Instagram and fathering over 100 children.

The last fact is a relatively recent revelation. This year, Durov surprised his online followers by revealing that a sperm donation he made to a fertility clinic had resulted in children conceived in 12 countries by more than 100 couples. He was, he noted with pride, “high-quality donor material”.