Prime numbers - those figures which refuse to be divided neatly by anything other than one and themselves - are fundamental to mathematics. Yet they seem to surface entirely randomly along the number line. But are the primes truly random - or is there some hidden pattern? Marcus DuSautoy investigates the fascinating story of the great mathematicians who've grappled with the problem of the primes.
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Ready to Watch A Night of Numbers, Season 1, Episode 2?