Zsigmondy numbers: Difference between revisions

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If a particular '''a<sup>n</sup> - b<sup>n</sup>''' is prime, thanthen '''Zs(n,a,b)''' will be equal to that prime. '''2<sup>5</sup> - 1<sup>5</sup> = 31''' so '''Zs(5,2,1) = 31'''.