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Date: 18-1-2021
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The converse of Fermat's little theorem is also known as Lehmer's theorem. It states that, if an integer is prime to and and there is no integer for which , then is not prime. Here, is called a witness to the primality of . This theorem is the basis for the Pratt primality certificate.
REFERENCES:
Riesel, H. Prime Numbers and Computer Methods for Factorization, 2nd ed. Boston, MA: Birkhäuser, p. 96, 1994.
Wagon, S. Mathematica in Action. New York: W. H. Freeman, pp. 278-279, 1991.
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قسم شؤون المعارف ينظم دورة عن آليات عمل الفهارس الفنية للموسوعات والكتب لملاكاته
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