Williams, H. C. The primality of certain integers of the form \(2Ar^n-1\). (English) Zbl 0475.10003 Acta Arith. 39, 7-17 (1981). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 2 Documents MSC: 11A41 Primes Keywords:Lucas functions; generalized Lehmer functions; primality; special primes PDFBibTeX XMLCite \textit{H. C. Williams}, Acta Arith. 39, 7--17 (1981; Zbl 0475.10003) Full Text: DOI EuDML Online Encyclopedia of Integer Sequences: Numbers k such that 2*3^k - 1 is prime. Numbers k such that 4*5^k - 1 is prime. Numbers k such that 6*7^k - 1 is prime. Numbers n such that 10*11^n -1 is prime. Numbers k such that 5*6^k - 1 is prime. Numbers n such that 11*12^n -1 is prime. Numbers k such that 7*8^k - 1 is prime. Numbers n such that 3*4^n - 1 is prime. Numbers k such that 12*13^k - 1 is prime.