In number theory, Polignac's
conjecture was made by Alphonse de Polignac in 1849 and states: For any
positive even number En, there are infinitely many prime gaps of size En. In
other words: There are infinitely many cases of two consecutive prime numbers with
difference En.
The conjecture has not yet been
proven or disproven for a given value of En. In 2013 an important breakthrough
was made by Zhang Yitang who proved that there are infinitely many prime gaps
of size En for some value of En<70,000,000.
For En=6, it says there are
infinitely many primes (p, p + 6). For En=4, it says there are infinitely many
cousin primes (p, p + 4). For En=2, it is the twin prime conjecture that there are infinitely many twin primes (p, p + 2) as shown in Figure 1. For En=0, it is the new prime theorem.
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