What is the oldest Qur’an manuscript in existence today, and where is it located, and how many pages does it have?

The oldest Quranic manuscript currently existing is the Uthmani Mus'haf in Turkey. The Quran does not differ based on the number of pages, as page counts vary according to paper size, font, or printing. The Quran is preserved from alteration and change by Allah's saying: "Indeed, it is We who sent down the Dhikr (the Quran) and indeed, We will be its Guardian." To find out the number of pages in the Mus'haf located in Turkey, one can contact them.