A152177 Smallest prime factor of G+n, where G is any sufficiently large power tower of 3, e.g., Graham's number.

3, 2, 11, 2, 61094071, 2, 3, 2, 5, 2, 17, 2, 3, 2, 41, 2, 147331, 2, 3, 2, 19, 2, 7, 2, 3, 2, 101117, 2, 5, 2, 3, 2, 293, 2

Offset: 0

Author

Karl W. Heuer, Nov 28 2008

Keywords

• nonn
• more

Examples

			a(2) = 11 because 3^3^3^... + 2 = 0 (mod 11).
		

Links

• Wikipedia, Graham's number

Crossrefs

Cf. A152178.