A186630 Numbers n>0 such that 666*10^n+1 is prime.

1, 2, 10, 12, 30, 48, 373, 580, 619, 718, 1592, 2928, 3076, 4741, 9198, 14020

Offset: 1

Author

Arkadiusz Wesolowski, Feb 24 2011

Keywords

• nonn
• base
• more

Comments

No other terms below 10^5. [Arkadiusz Wesolowski, Dec 23 2011]

Links

• Chris Caldwell, The Prime Glossary, Beastly prime
• G. L. Honaker, Jr. and Chris Caldwell, Prime Curios! 66601
• R. Ondrejka, The Top Ten: a Catalogue of Primal Configurations (May 2001), p. 83

Crossrefs

Cf. A186086.

Programs

Mathematica

Select[Range[10^3], PrimeQ[666*10^# + 1] &] (* Arkadiusz Wesolowski, Sep 08 2011 *)

Extensions

a(16) (discovered on Dec 09 1999, by Nuutti Kuosa) added by Arkadiusz Wesolowski, Mar 16 2011