A089536 Lesser prime factor of semiprimes in A089535.

2, 29, 31, 2, 7, 7, 5, 1188359, 1307, 165864626101044727, 36120307175753, 9772772454840984668059, 8944440848667088469951, 3041407, 6446147951, 48370466980471484946806147635774599979591, 24025609733, 11, 15866068029777944368693, 50031370538856249715800928172618839

Offset: 1

Author

Ray Chandler, Nov 08 2003

Keywords

• nonn

Links

• Amiram Eldar, Table of n, a(n) for n = 1..26

Crossrefs

Cf. A020639, A085745, A089535, A089537.

Formula

a(n) = A020639(A089535(n)). - Michel Marcus, Jul 31 2021

a(n) = A089535(n)/A089537(n). - Amiram Eldar, Oct 26 2024

Extensions

a(14) from Donovan Johnson, Sep 05 2008

Offset changed to 1 and more terms from Jinyuan Wang, Jul 30 2021