Math 21a Summer 2019
Multivariable Calculus

New Prime Record
Swiss Radio and TV has an article about a new Prime Number record. The current record is 31.4 Trillion digits. Ema Haruka has now the record in prime numbers. The program Y-Cruncher had been running on 96 processors using 1.4 TBytes of RAM using 200 TBytes of Harddrive space.Archimedes was the first to give an estimate for Pi. It was 22/7 which is about 1.2 Promille too large.
Want to compute Pi to one million digits? Try
P=N[Pi,1000000]; Export["pi.m",P];on Mathematica. It can still do 100 Million digits quite comfortably with N[Pi,1000000] but the output file has already 100 Megabytes. For more, it is better to use some custom software like Y-Cruncher, which allows to customize to the machine.

