Uploaded August 2020 | Updated September 2026, 2 weeks ago

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If two numbers are coprime to n, what about their product? These questions are very important to many theorems in elementary number theory, such as Euler's totient theorem!

Modular arithmetic playlist: youtube.com/playlist?list=PLug5ZIRrShJHPX-OyMNLLCQfKXchdZKpE

0:00 Product of coprime numbers
4:40 Reducing mod n
6:47 Reducing coprime numbers mod n

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Music: OcularNebula - The Lopez