I guess you weren't replying to me, but the number Phi shows up in tons of places. I haven't read the Da Vinci code, but the book I mentioned is all about where the number phi surfaces. Some examples:Originally Posted byZach L.

-the construction of a perfect pentagran

-relationship between adjacent chambers in a sea mollusk

-sunflower florets

-crystals of materials

-shapes of galaxies

-pyramids and the parthenon

-the mona lisa

Those are the instances that are listed on the back cover, so I haven't given much away. It's truly fascinating if you enjoy math, as it not only discusses these things but the book comes with an ample amount of proofs.