At one byte per digit for storing the characters you would be wasting a Gigabyte of storage and annoying the hell out of anyone trying to scroll past the answer. The 1000 billionth binary digit of PI is '1' ! If rounded to the nearest billionth, that last digit would be 4 instead of a 3. What is pi to the billionth place? If you are asking for an explicit representation of a billion and one decimal digits here on [math]\color{#b92b27}{\bf\text{Quora}}[/math], you are not going to get it! We need you to answer this question! I don't think anyone knows. The first ten digits of pi are 3.141592653. Happy Pi Day! What is the billonth digit of pi? After about one month of computation on more than twenty high-end workstations and PCs, we can announce that: The 1000 billionth (10^12) binary digits of PI are It took more than a year but a Japanese math enthusiast has used a a home PC to calculate the ten trillionth digit of pi, breaking a record set a couple of years ago by a supercomputer. I was told that there has been a machine running for 10 years to try and find the end of pi but it has never found it. (3/14) (3/14) Although it's only really Pi day in the United States— where we (for some strange reason) put the month before the day and year when we write-out our date— we hope our friends from around the world can enjoy this without having to wait until July 22nd (22/7 being one representation of Pi).