Tag Archives: logarithmic

Post without words #22

Image | Posted on by | Tagged , , | 8 Comments

Modular exponentiation by repeated squaring

In my last post we saw how to quickly compute powers of the form by repeatedly squaring: ; then ; and so on. This is much more efficient than computing powers by repeated multiplication: for example, we need only three … Continue reading

Posted in computation, number theory | Tagged , , , , , , , | 4 Comments