PARIS (AFP) - French President Francois Hollande's ratings, scraping historic lows just weeks ago, have soared in the aftermath of deadly Islamist attacks in Paris, data showed on Monday.

Mr Hollande's ratings leapt by a record 21 percentage points to 40 per cent, according to an opinion poll carried out by the Ifop polling company.

Prime Minister Manuel Valls also saw his ratings jump 17 percentage points to 61 per cent - higher than when he first took office.

Prior to the attacks, Mr Hollande's ratings had fallen to historic lows in the face of record French unemployment and sluggish growth.

The attacks by three Islamists in and around Paris nearly two weeks ago left 17 people dead, shocked the country and sparked an outpouring of international support.