sentences:  On December 12, 2009, a team including researchers from the CWI, the EPFL, INRIA and NTT in addition to the authors of the previous record factored RSA-768, a 232-digit semiprime.They used the equivalent of almost 2000
  years of computing on a single core 2.2 GHz AMD Opteron.In November 2019, RSA-240 was factored by Fabrice Boudot, Pierrick Gaudry, Aurore Guillevic, Nadia Heninger, Emmanuel Thomé and Paul Zimmermann.