>>11521634>is he without a doubt the smartest man to exist in modern times?The question mark would seem to suggest that you're holding this claim in doubt yourself.
The truth is his peers were very impressed with his ability, but Einstein said at the time what many probably suspect today: That he was a "thinking animal" rather than someone of great depth of insight.
The truth though is that you were probably wowed by his gigantic known-for section and the truth is those lists are just incomplete and if some wiki editor went looking for every result Cauchy, Euler or even some modern greats came up with it'd put things into perspective.