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Mathematics of Computation
Mathematics of Computation
ISSN 1088-6842(online) ISSN 0025-5718(print)

 

Some primes of the form $ (a\sp{n}-1)/(a-1)$


Authors: H. C. Williams and E. Seah
Journal: Math. Comp. 33 (1979), 1337-1342
MSC: Primary 10A25
MathSciNet review: 537980
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Abstract: A table of primes of the form $ ({a^n} - 1)/(a - 1)$ for values of a and n such that $ 3 \leqslant a \leqslant 12$, $ 2 \leqslant n \leqslant 1000$ is presented. A description is given of the techniques used to obtain this table, and some numbers such as $ ({10^{1031}} - 1)/9$ which are pseudoprime but whose primality is not yet rigorously established are also discussed.


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Additional Information

DOI: http://dx.doi.org/10.1090/S0025-5718-1979-0537980-7
PII: S 0025-5718(1979)0537980-7
Article copyright: © Copyright 1979 American Mathematical Society