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Bibliography

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A. J. C. Cunningham & H. J. Woodall, Factorisation of up to high powers (), Francis Hodgson, London, 1925.

[2]

D. H. Lehmer, ``On the factors of ,'' Amer. Math. Soc., Bull., v. 53, 1947, p. 164-167. MR 0019635 (8:441c)

[3]

Raphael M. Robinson, ``Mersenne and Fermat numbers,'' Amer. Math. Soc., Proc., v. 5, 1954, p. 842-846. MR 0064787 (16:335d)

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Raphael M. Robinson, ``Factors of Fermat numbers,'' MTAC, v. 11, 1957, p. 21-22. MR 0085269 (19:14e)

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J. L. Selfridge, ``Factors of Fermat numbers,'' MTAC, v. 7, 1953, p. 274-275.

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M. Kraitchik, Introduction à la Théorie des Nombres, Gauthier-Villars, Paris, 1952. p. 39. MR 0051845 (14:535a)

[7]

R. C. Archibald, ``Mersenne numbers,'' MTAC, v. 3, Note 98, 1949, p. 398.