A176689 Prime factors of 2^128 - 1.

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

Offset

1,1

Links

Table of n, a(n) for n=1..9.

Mathematica

First/@FactorInteger[2^128-1]

Prog

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

Crossrefs

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

Sequence in context: A058910 A307843 A023394 * A256510 A260377 A056130

Adjacent sequences: A176686 A176687 A176688 * A176690 A176691 A176692

Keyword

fini,full,nonn

Author

Vladimir Joseph Stephan Orlovsky, Apr 23 2010

Extensions

Edited by T. D. Noe, May 06 2010

Typo in definition corrected by Arkadiusz Wesolowski, Feb 17 2011

Status

approved