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1
How many known digits are there of Pi?
6.4 Billion
3.2 Million
3.7 Million
5.8 Billion
36% got this right
2
What is the term for Pi being an infinite, non-repeating number?
Irrational Number
Even Number
Prime Number
Rational Number
57% got this right
3
What is the TRUE longest number of digits of Pi memorized by anyone?
70,000 digits by Rajveer Meena in 2015
100,000 digits by Akira Haraguchi in 2006
31,415 digits by Marc Umile in 2007
50,000 digits by Suresh Kumar Sharma in 2018
25% got this right
4
Which famous physicist is known for reciting Pi to over 700 digits?
Albert Einstein
Isaac Newton
Niels Bohr
Stephen Hawking
41% got this right
5
How many years has Pi Day been celebrated as a national holiday in the U.S. as of 2025?
16 years
19 years
25 years
6 years
25% got this right
6
What is the most commonly occurring number in the first 100,000 decimal places of Pi?
1
0
2
4
58% got this right
Occurs over 10,000 times!
7
In which year did Pi Day first become an official holiday?
2009
1947
1999
2001
41% got this right
8
What is the first major mathematical theorem that involves Pi?
The Pythagorean Theorem
Euclid's Elements
The Law of Sines
The Quadratic Formula
38% got this right
9
How many years do mathematicians estimate it would take for a person to recite all of Pi without stopping?
133
200,000
258
314
