Prithviraj Sukumaran, the young talent of Mollywood, is all set to start filming for his 100th movie project. The actor, who has completed 14 years in the industry, has already signed his100th movie. Reportedly, the highly anticipated epic drama Karnan has been slated as the 100th movie of Prithviraj. The team is consciously delaying the project, due to the same reason.According to the sources, Prithviraj is extremely keen to materialise Karnan as his 100th project, as it is the most ambitious project in his career, so far. The team has already started the pre-production of the movie.