You 100% need to have a significantly above average IQ, just to get to the level where you can start working on any given known mathematical problem. Once you

You 100% need to have a significantly above average IQ, just to get to the level where you can start working on any given known mathematical problem. Once you are at that level, then one could conceivably think that luck+hardwork might be enough to get you results, but when you are considerably smarter, you can work much faster than others, and maybe even make connections that others will never be able to make.