Walkman world

Walkman world

Philip Seymour Hoffman’s 2009 music film “Pirate Radio” was adapted from a real story. In 1966, a yacht carrying a “pirate radio” that broadcasted music…

Charming special prime

Charming special prime

Recently, an amateur mathematician from Florida, USA, discovered the largest prime number known to humans, 2^82589933-1; the number has 24,620,048, and if it is printed…