Statistical patterns in primes

May 14, 2009 18:18


There is an interesting new result showing that the distribution of prime numbers obeys a modified version of Benford's Law. The result also shows that another sequence who's distribution is somehow fundamentally related to the distribution of primes, the 0s of the Reimann zeta function.

It is my feeling that results like this do not strongly ( Read more... )

security, computers, cryptography

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zanfur May 15 2009, 01:31:28 UTC
This isn't a new result -- it's been known for decades. Of course they're logarithmically distributed! Think of the Eratosthenes sieve: every new prime found removes "potential" prime numbers farther along the sieve, giving to a logarithmically decreasing density of primes. We learned this in algebra class in my high school.

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zanfur May 15 2009, 01:35:57 UTC
Ah, I misunderstood the article at first. Yeah, I agree, a weighted distribution of the first digit of a prime doesn't reduce the usefulness of primes in general (add another digit, if you care).

It would seem to me that this follows from the fact that they're logarithmically distributed, though. Logarithmically distributed means exponentially increasing (on average), which is exactly the class of number sequences that benford's law applies to.

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princessgeek May 15 2009, 02:18:20 UTC
I don't know, but I'm feeling a little warm.

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