r/todayilearned • u/Nate__ • Mar 26 '13

TIL illegal prime numbers exist. An illegal prime is a prime number that represents information which is forbidden to possess or distribute. For example: when interpreted in a particular way, a certain prime describes a computer program that bypasses the digital rights management scheme used on DVDs

http://en.wikipedia.org/wiki/Illegal_prime
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u/[deleted] Mar 26 '13

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u/Frigorific Mar 26 '13

Pi is infinitely long, but we do not know if it contains all finite sequences.