Comment by shagie

A Pseudorandom Number Sequence Test Program - https://www.fourmilab.ch/random/

    Monte Carlo Value for Pi

    Each successive sequence of six bytes is used as 24 bit X and Y co-ordinates within a square. If the distance of the randomly-generated point is less than the radius of a circle inscribed within the square, the six-byte sequence is considered a “hit”. The percentage of hits can be used to calculate the value of Pi. For very large streams (this approximation converges very slowly), the value will approach the correct value of Pi if the sequence is close to random. A 500000 byte file created by radioactive decay yielded:

    Monte Carlo value for Pi is 3.143580574 (error 0.06 percent).