A110782 Copies of 1,3,7 and 9 cyclically such that every partial concatenation is a prime.

11, 3, 777, 999, 11, 33333333, 777777777777777777777, 999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999, 1111111111111111111111111

Offset: 1

Author

Amarnath Murthy, Aug 12 2005

Keywords

• base
• nonn

Examples

			11, 113, 113777, 113777999, ... are all prime.
		

Crossrefs

Cf. A110774, A110775, A110776, A110777, A110778, A110780, A110781, A110783.

Extensions

More terms from Joshua Zucker, Jan 11 2006

The next term is 726 3's and is too large to include.