Subtleties in the Distribution of Primes

  • Hans Riesel
Part of the Progress in Mathematics book series (PM, volume 57)


There are only very few proved results concerning the distribution of primes in short intervals. The prime number theorem tells us that the average density of primes around x is approximately 1/ln x. This means that if we consider an interval of length Δx about x and choose any integer t in this interval, then the probability of t being a prime will approach 1/ln x as x → ∞, if Δx is small compared to x. This implies that the primes tend to thin out as x grows larger; an implication that becomes obvious when considering that the condition for a randomly picked integer x to be composite is that it has some prime factor \( \le \sqrt x \), and that there are more prime factors \( \le \sqrt x \) to choose from when x is larger.


Number Series Residue Class Successive Prime White Ball Infinite Product 
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Copyright information

© Springer Science+Business Media New York 1985

Authors and Affiliations

  • Hans Riesel
    • 1
  1. 1.VällingbySweden

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