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Contact: partyman10@ymail.com

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Pythagorean tree: For each natural number $n$, we draw a periodic curve starting from the origin, intersecting the $x$-axis at $n$ and its multiples. The prime numbers are those that have been intersected by only two curves: the prime number itself and one.

Below the currently highlighted number, we also show its sum of divisors $σ(n)$, and its aliquot sum $s(n) = σ(n) - n$, which indicate whether the number is prime, deficient, perfect or abundant. How to make dragon curve: Ulam Spiral: all numbers from 1 to 100000; the more divisors a number has, the larger is the dot. Comparison between 5,000 and 50,000 prime numbers plotted in polar coordinates $\varphi$ curve:                        LaTeX + Image: $\style{ display: inline-block; background: url(//i.stack.imgur.com/C8nN0.png?s=128&g=1) no-repeat center;}{\phantom{\Rule{128px}{128px}{0px}}}$

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