Some prime numbers of the forms 2𝐴3ⁿ+1 and 2𝐴3ⁿ-1

Williams, H. C.; Zarnke, C. R.

doi:10.1090/S0025-5718-1972-0314747-X

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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