A100893 a(n) = smallest n-digit prime formed by appending a digit to a(n-1); a(1) = 2.

2, 23, 233, 2333, 23333

Offset: 1

Author

Jorge Coveiro, Jan 10 2005

Keywords

• fini
• nonn
• base
• full

Comments

This sequence is finite because there is no prime a(6) since 233331,233333,233337,233339 are not prime.

This is an initial subsequence of A048549, A065122, A088603, and A127889; and for any b, the base b analog of this sequence is an initial subsequence of the base b analog of each of these three sequences. [From Franklin T. Adams-Watters, Jun 27 2009]

Examples

			a(1)=2
a(2)=23
a(3)=233
a(4)=2333
a(5)=23333