Jean-Marc Ayrault also told France 2 Television that he thought Trump's personality raised "questions".
Asked about Trump's personality he said: "It makes you think, it asks questions. It has certainly provoked reactions."
According to Reuters, Ayrault said it looked likely Trump had won power, adding, "and France is an ally of the United States. We are therefore a key partner, and we need to work together for stability and peace in the world, and for a world which tackles the key issues facing it."
"We are going to need to understand what the new president will want to do," he added.
"What is going to happen to the Paris climate change deal? On the Iran nuclear deal? These are key questions that we are already asking ourselves."