Follow-up video where Terence Tao explains in very simple terms the history of the problem(s) and how people improved on Zhang's 70,000,000 constant afterwards:

Follow-up video where Terence Tao explains in very simple terms the history of the problem(s) and how people improved on Zhang's 70,000,000 constant afterwards: https://www.youtube.com/watch?v=pp06oGD4m00 https://www.youtube.com/watch?v=pp06oGD4m00