How many digits of the square root of two have been calculated? I have
done a little bit of searching on this topic and I know that some guys
from NASA have calculated 10 million digits, but that was in the 90's.
So I would like to know if anyone has ever calculated more than 10
million digits, and if so, then how many digits have they calculated,
and how long did it take?

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Request for Question Clarification by pafalafa-ga on 16 Jun 2006 14:03 PDT

hclewk-ga,

The calculation of 10 million digits for the square root of two still
seems to hold the record, even though it's about a decade old.

pi seems to be of more interest to numbers-types, and has been
calculated out to many millions of digits, in ever longer lists of
numbers.

But the sqaure root of two seems to get much less attention from
super-computer endowed number-ologists, and 10 million is as far as
it's gotten, as far as I can tell.

Would details about the 10-million digit effort suffice as an answer
to your question?

pafalafa-ga

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Clarification of Question by hclewk-ga on 17 Jun 2006 13:50 PDT

yes, details about the 10-million digit effort would suffice as an answer

[square root] 2 1.41421356237309504... 137,438,953,444 [digits] Y.
Kanada & D. Takahashi - 1997

http://numbers.computation.free.fr/Constants/Miscellaneous/Records.html