see The Man Who Loved Only Numbers https://en.wikipedia.org/wiki/The_Man_Who_Loved_Only_Numbers https://en.wikipedia.org/wiki/The_Man_Who_Loved_Only_Numbers wh

see The Man Who Loved Only Numbers https://en.wikipedia.org/wiki/The_Man_Who_Loved_Only_Numbers https://en.wikipedia.org/wiki/The_Man_Who_Loved_Only_Numbers which was a fun book about Erdős