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

1,1

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

Table of n, a(n) for n=1..33.

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

Crossrefs

Cf. A006530, A385503, A289661-A289665.

Sequence in context: A066607 A083200 A102353 * A048714 A010823 A022709

Adjacent sequences: A289660 A289661 A289662 * A289664 A289665 A289666

Keyword

nonn

Author

N. J. A. Sloane, Jul 25 2017

Extensions

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

Status

approved