HP 38G: Comparison of Factoring Efficiency of SQFO & Pollard's Rho
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04-03-2015, 12:57 PM
Post: #1
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HP 38G: Comparison of Factoring Efficiency of SQFO & Pollard's Rho
Pollard's Rho algorithm
http://www.hpmuseum.org/forum/thread-3540.html & Shanks' Square Form algorithm http://www.hpmuseum.org/forum/thread-3483.html are two very different approaches to factorization. For a set of 10 semi-prime numbers having factors varying from 3 to 6 digits the timing on the HP 38G was: Pol-Rho SQFO 0.1758 0.0775 Mean 0.1965 0.1069 Sample StDev 0.0950 0.0262 Median in units of 1 hour. So until a better modulo squaring & GCD programme appears SQFO remains the fastest general factoring programme for the 38G. |
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