PRT CAD format is somewhat generic and was used by many CAD programs throughout the years, but some still support it and can convert IGES/IGS data to it. However the resulting file may be in a very specific PRT file, which may not be supported in all programs.
Convert IGES 3D exchange format to CAD 3D part or component.
We found 3 software records in the database related to .igs to .prt file format conversion.
Microsoft Windows software - convert igs to prt on Windows
A feature rich 3D CAD software by Siemens
Convert from igs file format
The tables with software actions are a good pointer for what a certain program does with various file types and often may give users a good hint how to perform certain file conversion, for example the above-mentioned igs to prt. However, it is not perfect and sometimes can show results which are not really usable because of how certain programs work with files and the possible conversion is thus actually not possible at all.
A CAD converter with huge format support
A 2D and 3D CAD construction software