pi never ends but we don't know many the there is someone that claims to know 20million digits if he said a number per second it would take about 2 years so examiners say things like 2000-3500 and he says them and he has not been proved wrong yet.
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3.14
3.141592653589793238462643383279502884197169399375105820974944592307816406286
Hiroyuki Goto of Tokyo, Japan.
The record for memorizing digits of pi, certified by Guinness World Records, is 67,890 digits, recited in China by Lu Chao in 24 hours and 4 minutes on 20 November 2005.
There is 5 trillion digits of pi.