A176689 Prime factors of 2^128 - 1.

3, 5, 17, 257, 641, 65537, 274177, 6700417, 67280421310721

Offset: 1

Author

Vladimir Joseph Stephan Orlovsky, Apr 23 2010

Keywords

• fini
• full
• nonn

Crossrefs

Cf. A000215, A002590, A019434, A023394, A050922, A070592.

Programs

Mathematica

First/@FactorInteger[2^128-1]

PARI

factor(2^128 - 1)[,1] \\ Charles R Greathouse IV, Sep 06 2016

Extensions

Edited by T. D. Noe, May 06 2010

Typo in definition corrected by Arkadiusz Wesolowski, Feb 17 2011