Who are the best at maths?

I'm curious, who exactly are considered the best in the field of mathematics? Are they individuals with innate talent, or is it a combination of natural ability and rigorous training? What characteristics do they typically possess that set them apart from their peers? Additionally, are there any notable mathematicians whose work has had a significant impact on the world of finance and cryptocurrency, particularly in terms of algorithms and encryption methods? I'm eager to learn more about these individuals and their contributions to the field.