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2. L. K. Hua, Introduction to the Theory of Numbers, Springer-Verlag, Berlin-Heidelberg-New York, 1982.
3. On Lucas's Test for the Primality of Mersenne's Numbers
4. H. Riessel, Prime Numbers and Computer Methods for Factorization, Birkhausen Boston-Basel-Stuttgart, 1985.
5. W. Sierpinski, Elementary Theory of Numbers, Polski Akademie Nauk., Warsaw, 1964.