A185656 Final prime in first term of A019518 that is divisible by 7^n.

11, 601, 601, 601, 107839, 577937, 8341631, 8341631, 8341631, 8341631, 8341631, 166778433637, 4054944029077, 58520914386689

Offset: 1

Author

James G. Merickel, Feb 01 2011

Keywords

• nonn
• base
• more

Examples

			None of the numbers 2, 23, 235, and 2357 are divisible by 11, but 235711 is divisible by 7, so a(1)=11.
Not until the concatenation through 601 is such a number divisible by 7^2, so a(2)=601.
		

Crossrefs

Cf. A183194 and immediately following entries.

Extensions

a(12) added by James G. Merickel, Mar 29 2013

a(12) corrected and a(13)-a(14) added by Seth A. Troisi, May 18 2022