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Some prime numbers of the forms $ 2A3\sp{n}+1$ and $ 2A3\sp{n}-1$


Authors: H. C. Williams and C. R. Zarnke
Journal: Math. Comp. 26 (1972), 995-998
MSC: Primary 10A25
DOI: https://doi.org/10.1090/S0025-5718-1972-0314747-X
MathSciNet review: 0314747
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Abstract: All primes of the form $ 2A{3^n} + 1$ and of the form $ 2A{3^n} - 1$, where $ 1 \leqq A \leqq 50$ and $ 1 \leqq n \leqq 325$, are found. Some large twin primes are also determined.


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DOI: https://doi.org/10.1090/S0025-5718-1972-0314747-X
Keywords: Primes, twin primes, algorithm
Article copyright: © Copyright 1972 American Mathematical Society