短語詞組短語Fermat primality test 費馬素性檢驗Pepin primality test Pepin 檢驗probabilistic primality test 概率素性檢測Lucasian primality test Lucas 型素性測定算法Jacobi sum primality test 雅克比和素性判別test for primality 素性檢測 返回 primality test