Issue #7783 has been updated by zzak (Zachary Scott).


=begin
Hello Mr. Pastorino!

It seems to work when I use the mathn library, which implements sqrt(3)

(({irb(main):001:0> require 'mathn' #=> true}))

(({irb(main):002:0> Math.sqrt(2**6456) #=> 53067179215503898168575338070}))
=end
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Feature #7783: Add support for sqrt of very large numbers
https://bugs.ruby-lang.org/issues/7783#change-35832

Author: spastorino (Santiago Pastorino)
Status: Open
Priority: Normal
Assignee: 
Category: 
Target version: 


Currently ...

irb(main):001:0> Math.sqrt(2**6456)
=> Infinity

I wanted to do something like this to show an example of how RSA could break RSA the public modulus N is generated incorrectly.

In Python you can do it using http://code.google.com/p/gmpy/
The issue is also described here http://webcache.googleusercontent.com/search?q=cache:on5z4JS3iUcJ:stackoverflow.com/questions/8226087/how-do-i-get-math-sqrt-to-return-a-bignum-and-not-a-float+&cd=3&hl=en&ct=clnk


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