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Will YouTube Ever Run Out Of Video IDs?

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Every YouTube video has a unique ID based on a counting system called Base 64. Randomly generated, that Base 64 ID allows YouTube to have a unique yet short url by using the alphabet in lowercase and uppercase plus two symbols: – and _. With 11 characters to work with in the video ID, or 64 to the 11th power, that would be “enough for every single human on planet earth to upload a video every minute for around 18,000 years”.

Tom Scott explains the math behind this smart tech in, also known as Will YouTube Ever Run Out Of Video IDs?

There are more math videos in the archives, including: How many LEGO combinations can be made with 6 standard bricks?

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