A100904 Numbers k such that (10^k+1)^2-2 is prime.

22, 351, 1061, 410997

Offset: 1

Author

Ray Chandler, Nov 21 2004

Keywords

• nonn
• more

Links

• Steven Harvey, Carol and Kynea Primes.

Programs

PARI

is(n)=ispseudoprime((10^n+1)^2-2) \\ Charles R Greathouse IV, Feb 19 2016

Extensions

a(4) from Ryan Propper, Feb 21 2024