Our website provided a free download of Msieve 1.5.3 for Mac. This free Mac application is an intellectual property of Jasonp Sf. The software is included in Developer Tools. This Mac download was scanned by our antivirus and was rated as virus free.
From the developer:
Msieve is an open-source C library implementing a suite of algorithms to factor large integers. The application contains an implementation of the SIQS and GNFS algorithms; the latter has helped complete some of the largest public factorizations known.
You may want to check out more Mac applications, such as Browsealoud, RAGE WebDesign or solr, which might be similar to Msieve.