A273521 Numbers n such that 10*14^n-1 is prime.

1, 105, 209, 505, 683, 879, 1233, 11647

Offset

0,2

Links

Table of n, a(n) for n=0..7.

J. Brillhart, D. H. Lehmer and J. L. Selfridge, New primality criteria and factorizations of 2^m+-1, Math. Compl. 29 (1975) 620-647.

John Eisenmann, Prime Numbers of the Form a * 14^b - 1.

Victor Shoup, A Computational Introduction to Number Theory and Algebra, 2008, page 348.

Eric Weisstein's World of Mathematics, Lucas Sequence.

Eric Weisstein's World of Mathematics, Rabin-Miller Strong Pseudoprime Test.

Prog

(PARI) is(n)=ispseudoprime(10*14^n-1) \\ Charles R Greathouse IV, Jun 08 2016

Crossrefs

Sequence in context: A044337 A044718 A239827 * A214082 A069692 A212665

Adjacent sequences: A273518 A273519 A273520 * A273522 A273523 A273524

Keyword

nonn,more

Author

Jack P. Eisenmann, May 23 2016

Status

approved