Hi Philippe, I did some additional methods for SimpleNumber and Integer that were posted a few months ago. There's asFraction and a factorize method. The algorithm is done by Farey fractions which gives very good aproximations. Ex: pi.asFraction [ 22, 7 ] pi.asFraction(1000) [ 355, 113 ] 1000.factorize List[ 2, 2, 2, 5, 5, 5 ] 1000.factorsList List[ [ 2, 3 ], [ 5, 3 ] ] I don't have much time now to explain the other methods (they're in the list archives) but can do so later on or tomorrow if there is interest. Cheers JS
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