I've noticed that I'm close to $$163)\. toot, so I'll toot something very cool about this number. \(163)\ is largest of nine Heegner numbers, and I'll explain what those are as I understand it. Gauss wanted to identify all perfect Pythagorian triplets which are whole numbers \(a, b ,c$$ that satisfy $$a²+b² = c²$$. To do that he had to involve complex numbers and come up with new factorisation system.

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So factorised $$a²+b² = c²$$ in new system (which involves imaginary numbers) is now $$a²+b²=(a-ib)+(a+ib)$$ and that system had to have same property of unique factorisation of whole numbers, unique factorisation means that any whole number $$w$$ can be written as unique product of prime numbers, and this works for $$\sqrt{-1}$$

Heegner numbers are numbers which don't show unique factorisation in that new defined system, so for example $$6=2*3$$ is also $$6=(1+\sqrt{-5})(1-\sqrt{5})$$, here 5 is Heegner number, and $$163$$ also has that property and its last proven number to have that property.
Also $$163$$ has property of giving almost whole number when used in $$e^{\sqrt{163}\pi}=262537412640768743.9999999999992500 ...$$ as one of Ramanujan constants. It has some more properties as being one of "lucky" and "fortunate" math numbers, and gives good aproximations of $$e$$ and $$\pi$$ . Pretty stacked up number, if you ask me. 