A177132 Primes of the form 6*10^n+1.

7, 61, 601, 600000001, 6000000001, 6000000000000001, 600000000000000000001, 600000000000000000000000001, 600000000000000000000000000000000000001, 6000000000000000000000000000000000000000000001, 600000000000000000000000000000000000000000000000000000000000000001

Offset: 1

Author

Vincenzo Librandi, Dec 10 2010

Keywords

• nonn

Links

• Makoto Kamada, Prime numbers of the form 600...001.

Crossrefs

Cf. A056805.

Programs

Magma

[a: n in [0..250]|IsPrime(a) where a is 6*10^n+1];

Mathematica

Select[Table[6*10^n+1,{n,0,70}],PrimeQ] (* Harvey P. Dale, Feb 22 2015 *)