[Date Index] [Thread Index] [Author Index]
I tried this function (available in NumberTheory) on a 105-digit composite (according to PrimeQ) and it eventually returned the same number. May I assume that it simply failed to find a factor? Or should I try ProvablePrimeQ on the number? Assuming it simply failed to find a factor, what options to FactorIntegerECM might I set in order to better my chances for finding (on a re-run) a factor for this size of a composite?