What is the prime factorisation of 1? (it does have one!)

After I made this video about 1 not being a prime, ( • The REAL reason 1 isn'... ) I was asked a great question. If all positive integers have prime factorisations, but 1 isn't prime, what is the prime factorisation of 1? The answer? 1 is the product of NO primes!
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[@younis533]

Thank you i enjoyed the animation and the explanation

[@Mathsaurus]

Thanks, pleased to hear that!