A089543 Lesser prime factor of semiprimes in A089542.

2, 2, 3, 7, 53, 29, 353, 1549, 8353, 7, 15889, 1691419, 347, 67, 1097, 274177, 43, 18882774223, 67, 5197, 1801088543, 556114086547, 44773, 3062989, 5641, 92553847628747, 18349361, 607, 51131, 13217, 42806180589950051

Offset: 1

Author

Ray Chandler, Nov 09 2003

Keywords

• nonn

Crossrefs

Cf. A085753, A089542, A089544.