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Hello there.

This is Numberphile. We mainly post videos about mathematics and just numbers in general.

63 and -7/4 are special

63 and -7/4 are special

Dynamical sequences, prime divisors and special exceptions.

Featuring Dr Holly Krieger from MIT.

More primes: http://bit.ly/primevids
More videos with Holly Krieger: http://bit.ly/HollyKrieger

Since this was filmed, Holly has become a mathematics Lecturer at the University of Cambridge and the Corfield Fellow at Murray Edwards College.

Measuring Coastline

Measuring Coastline

Why -1/12 is a gold nugget

Why -1/12 is a gold nugget