Q:
# How many digits of pi have been calculated?

**According to Numberworld, 12.1 trillion digits of pi have been calculated, as of December 2013.** This was achieved after 94 days of computation; however, 12 of those days were lost to hardware issues. The previous calculation that achieved 10 trillion digits took 371 days to complete two years prior.

Credit:
The Washington Post
The Washington Post
Getty Images

As of 2014, the world record for digits of pi memorized is held by Chao Lu from China. He spent four years practicing and was able to recite 67,890 digits of pi from memory. The recitation happened on Nov. 20, 2005, took just over 24 hours to complete and was documented on 26 video tapes.

Learn more about Numbers-
Q:
## Which is greater, the greatest whole number with five digits or the least whole number with six digits?

A: The lowest whole number with six digits is 100,000, which is greater than 99,999, the greatest whole number with five digits. A whole number is defined as ... Full Answer >Filed Under: -
Q:
## How many digits are in pi?

A: An endless number of digits are in pi. It is an irrational number, which means it cannot be expressed as the ratio of any two integers. Furthermore, it was... Full Answer >Filed Under: -
Q:
## How do you write a number in scientific notation?

A: To write a number in scientific notation form, write the digits of the original number with a decimal point after the first digit. Then write a multiplicat... Full Answer >Filed Under: -
Q:
## How many combinations are there of three numbers?

A: There are 1,000 ways to combine the digits 0-9 to form unique three digit numbers. This is calculated by multiplying 10 x 10 x 10 = 1,000. This assumes tha... Full Answer >Filed Under: