Does Allah forgive a thousand sins for whoever recites Surat Al-Ikhlas one hundred times in a single day?

There is no authentic hadith proving the forgiveness of a thousand sins for one who recites Surah Al-Ikhlas a hundred times. However, weak hadiths mention the forgiveness of two hundred years' worth of sins for one who recites it two hundred times, and the forgiveness of fifty years' worth of sins for one who recites it fifty times. It is also narrated that whoever recites it two hundred times daily will have fifteen hundred good deeds recorded for him and fifty years' worth of sins erased, unless he owes a debt. All of these hadiths are weak.