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# Main Page

Here is a Wiki for primes and related topics.

Examples for math:

$N \supset \mathbb P = \{ p_n \mid n \in N \}$
$\displaystyle{ N \supset \mathbb P = \{ p_n \mid n \in N \} }$
$\sideset{_1^2}{_3^4}\prod_a^b$
$\displaystyle{ \sideset{_1^2}{_3^4}\prod_a^b }$
$\iiiint\limits_{F} \, dx\,dy\,dz\,dt$
$\displaystyle{ \iiiint\limits_{F} \, dx\,dy\,dz\,dt }$
$f(n) = \begin{cases} n/2, & \mbox{if }n\mbox{ is even} \\ 3n+1, & \mbox{if }n\mbox{ is odd} \end{cases}$
$\displaystyle{ f(n) = \begin{cases} n/2, & \mbox{if }n\mbox{ is even} \\ 3n+1, & \mbox{if }n\mbox{ is odd} \end{cases} }$
$\sum_{i=1}^\infty \frac{1}{p_i} = \frac{1}{2} + \frac{1}{3} + \frac{1}{5} + \frac{1}{7} + \frac{1}{11} + \dotsb = \infty$
$\displaystyle{ \sum_{i=1}^\infty \frac{1}{p_i} = \frac{1}{2} + \frac{1}{3} + \frac{1}{5} + \frac{1}{7} + \frac{1}{11} + \dotsb = \infty }$
$\pi(1)=0\ ;\ \pi(10) = 4\ ;\ \pi(100) = 25\ ;\ \pi(1000) = 168; \ \pi(1000000)=78498$
$\displaystyle{ \pi(1)=0\ ;\ \pi(10) = 4\ ;\ \pi(100) = 25\ ;\ \pi(1000) = 168; \ \pi(1000000)=78498 }$