Numberphile: Strings and Loops within Pi

My new favourite game – finding self-locating strings of numbers in the decimal expansion of pi. They play a very important role for objects known as ‘loops’… See if you can find your own here.

You can find more Numberphile videos featuring Tom here.


  1. 16470 is a self locating number and it is first appeared at position 1602 then how can self locating number be dead ends??


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