No. Re-word it so we can understand what you're trying to ask.
pi sqrt(2)
3.142857
about 59 000
3.14159265.... it is infinite.infinity.
530 million
In 2005, Lu Chao of China set a world record by reciting the first 67,890 digits of pi from memory.
In 2005, Lu Chao of China set a world record by memorising the first 67,890 digits of Pi
K
The current world record for remembering and reciting the most digits of pi is held by Chao Lu from China, who recited 67,890 digits of pi in 2005.
1/(2 Pi sqrt(LC))
The world record (as of 21st April 2012) was set by Chao Lu of China on the 20th November 2005. He managed to memorize pi to 67,890 digits.
Pi was introduced by the ancient Greek mathematicians; history does not record the name of a specific person who is responsible for this idea.