An order of magnitude is usually 10. But Erdos only published about twice as many papers as Euler (if this is even a good way to compare their respective outputs).<p>Also, Erdos was not so much of a theory builder but a problem solver. He also left many unsolved problems, some of which have led to new insights. But he didn&#x27;t spark the development of new fields of maths in the way that say Grothendieck did.