## The Trinity Hall Prime

Additional information

A prime number "gift" from a mathematicians leaving his college.

Featuring Tadashi Tokieda.

More Tadashi: http://bit.ly/tadashi_vids

Professor McKee explains: "Most of the digits of p were fixed so that: (i) the top two thirds made the desired pattern; (ii) the bottom third ensured that p-1 had a nice large (composite) factor F with the factorisation of F known. Numbers of this shape can easily be checked for primality. A small number of digits (you can see which!) were looped over until p was found that was prime."

Animation and editing by Pete McPartlan.