Hi,

In message "Bignum multiplication"
    on 03/07/30, Harry Ohlsen <harryo / qiqsolutions.com> writes:

|That made me wonder whether this is what Ruby uses.  Is it Karatsuba or something else?

It uses plain multiplication (as humans do).  I once tried to
understand Karatsuba algorithm, but failed.  Wish I had mathematical
brain.

							matz.
p.s.
Karatsuba sounds like Japanese name for me.  But I've heard he is
Russian.