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Talk:Pollard's rho algorithm

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This is an old revision of this page, as edited by TVRS (talk | contribs) at 23:03, 4 February 2007 (Core ideas). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

The algorithm under "Richard Brent's Variant" appears to have some problems. One problem is that 'm' is used but doesn't seem to be initialized. Where does it come from?

"Richard Brent's Variant" algorithm question

In Brent's original paper he wrote k=k+m. This appears as k=k+i on the Wikipedia page. Which is correct?

Citing

Note: The book "Introduction to Algorithms" uses brent's variant, not the original method.

Core ideas

...two numbers x and y are congruent modulo p with probability 0.5 after 1.177 numbers have been randomly chosen.

Is this really relevant? Since the algorithm picks pairs of numbers and only compares one pair at a time, how is the probability of finding one number in a pair congruent to the other affected by having previously chosen 1.177 number (or more specifically 1.177/2 pairs)? I'm not sure but just curious. TVRS 22:06, 4 February 2007 (UTC)[reply]