Bellard’s formula is used to calculate the nth digit of π in base 16. Bellard’s formula was discovered by Fabrice Bellard in 1997. It is about 43% faster than the Bailey–Borwein–Plouffe formula (discovered in 1995).[1] It has been used in PiHex, the now-completed distributed computing project. One important application is verifying computations of all digits…
