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- The twin prime constant is defined as $$C_2=\displaystyle\prod_{p \mathrm{\hspace{2pt} prime},p \geq 3} 1 - \dfrac{1}{(p-1)^2}.$$159 bytes (22 words) - 19:01, 24 May 2016
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- [[Riemann prime counting]]<br /> <div class="grid"><center>[[File:primezetapthumb.png|45px|link=Prime zeta P]]<br />26 KB (2,938 words) - 15:47, 26 August 2023
- ...constant $B_2$ is the sum of the reciprocals of the pairs of [[twin prime|twin primes]], i.e. $$B_2 = \displaystyle\sum_{p,p+2 \mathrm{\hspace{2pt} prime}} \dfrac{1}{p} + \dfrac{1}{p+2}=1.9021605831\ldots.$$582 bytes (81 words) - 18:58, 24 May 2016
- The twin prime constant is defined as $$C_2=\displaystyle\prod_{p \mathrm{\hspace{2pt} prime},p \geq 3} 1 - \dfrac{1}{(p-1)^2}.$$159 bytes (22 words) - 19:01, 24 May 2016
