The discussion centers around the debate on who the greatest mathematician is, with a strong consensus favoring Carl Friedrich Gauss. Participants highlight Gauss's prolific output, noting he authored over 200 papers and made significant contributions to both mathematics and physics. While some mention other notable figures like Euler, Riemann, and Archimedes, Gauss is repeatedly emphasized as the standout due to his extensive and high-quality work. The conversation also touches on Isaac Newton's contributions, with some arguing that his focus on alchemy detracted from his mathematical achievements. There is a general acknowledgment of the vast contributions from many mathematicians throughout history, suggesting that while Gauss may be the best from the list provided, other greats like Euler and Ramanujan deserve recognition as well. The thread concludes with a sense of admiration for Gauss's genius and the impact of various mathematicians on the field.