A289663 a(n) is the largest m such that p = n-th popular prime = A385503(n) is popular on the interval [2,m].

17, 119, 279, 1858, 5471, 29301, 53474, 117303, 220523, 611374, 2642391, 2672025, 2952463, 41192601, 237611044, 1967277194, 13692930957, 64358549949, 79880100420, 220369251374, 232880841877, 618765808209, 1882062587041, 9607847299025, 19364476224949, 26396066576762, 37636861534247, 114519204438979, 173975018331581, 228013888964263, 259777078505983, 284734190312531, 644744279642231

Offset: 1

Author

N. J. A. Sloane, Jul 25 2017

Keywords

• nonn

Comments

There is a slight doubt about these numbers since McNew only carried a search up to a certain point.

See A385503 for further links and information.

Links

• Nathan McNew, Popular values of the largest prime divisor function (corrected version), page 16, November 2015.

Crossrefs

Cf. A006530, A385503, A289661-A289665.

Extensions

Edited, with terms updated from revised version of McNew, by Peter Munn, Jul 04 2025